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Home → Products → Impurities Certified Reference Materials → L
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Impurities Certified Reference Materials

L-Tartaric Acid

  • Catalog number: RST01969
  • Status: BackOrdered
  • Molecular formula: C4H6O6
  • CAS registry number: 87-69-4
  • Capacity: 1 g
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Lactosyl Pregabalin Pyrrolidone

  • Catalog number: RSP01677
  • Status: BackOrdered
  • Molecular formula: C20H35NO11
  • CAS registry number: 466678-44-4
  • Capacity: 25 mg
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Loxoprofen Impurity 6

  • Catalog number: RSL01217
  • Status: BackOrdered
  • Molecular formula: C10H10O3
  • CAS registry number: 43153-07-7
  • Capacity: 25 mg
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Loxoprofen Impurity 7

  • Catalog number: RSL01218
  • Status: BackOrdered
  • Molecular formula: C10H10O4
  • CAS registry number: 67381-50-4
  • Capacity: 25 mg
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Loxoprofen Impurity 8

  • Catalog number: RSL01219
  • Status: BackOrdered
  • Molecular formula: C11H13BrO2
  • CAS registry number: 99807-54-2
  • Capacity: 100 mg
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Loxoprofen Impurity 9

  • Catalog number: RSL01220
  • Status: BackOrdered
  • Molecular formula: C17H20O5
  • CAS registry number: 1027957-36-3
  • Capacity: 10 mg
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Lurasidone Impurity A

  • Catalog number: RSL01223
  • Status: BackOrdered
  • Molecular formula: C9H11NO2
  • CAS registry number: 14805-29-9
  • Capacity: 25 mg
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Lurasidone Impurity B

  • Catalog number: RSL01224
  • Status: BackOrdered
  • Molecular formula: C19H26N3S.CH3O3S
  • CAS registry number: 186204-37-5
  • Capacity: 50 mg
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Losartan Related Compound C

  • Catalog number: RSL01208
  • Status: BackOrdered
  • Molecular formula: C22H21ClN6O
  • CAS registry number: 114798-36-6
  • Capacity: 20 mg
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Lisinopril Diketopiperazine (Anhydrous)

  • Catalog number: RSL01189
  • Status: BackOrdered
  • Molecular formula: C21H29N3O4
  • CAS registry number: 219677-82-4
  • Capacity: 25 mg
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Loratadine Related Compound A

  • Catalog number: RSL01192
  • Status: BackOrdered
  • Molecular formula: C19H19ClN2
  • CAS registry number: 100643-71-8
  • Capacity: 15 mg
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Loratadine Related Compound B

  • Catalog number: RSL01193
  • Status: BackOrdered
  • Molecular formula: C20H21ClN2
  • CAS registry number: 38092-89-6
  • Capacity: 15 mg
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Loratadine Related Compound C

  • Catalog number: RSL01194
  • Status: BackOrdered
  • Molecular formula: C14H10ClNO
  • CAS registry number: 31251-41-9
  • Capacity: 15 mg
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Lornoxicam Impurity A

  • Catalog number: RSL01199
  • Status: BackOrdered
  • Molecular formula: C5H6N2
  • CAS registry number: 504-29-0
  • Capacity: 50 mg
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Lornoxicam Impurity B (Lornoxicam Methyl ester )

  • Catalog number: RSL01200
  • Status: BackOrdered
  • Molecular formula: C9H8ClNO5S2
  • CAS registry number: 70415-50-8
  • Capacity: 25 mg
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Lornoxicam Impurity D

  • Catalog number: RSL01202
  • Status: BackOrdered
  • Molecular formula: C9H10ClNO6S2
  • CAS registry number: 906522-87-0
  • Capacity: 500 mg
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Lornoxicam Deschloro Analoge

  • Catalog number: RSL01203
  • Status: BackOrdered
  • Molecular formula: C13H11N3O4S2
  • CAS registry number: 59804-37-4
  • Capacity: 250 mg
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Lornoxicam Methyl Ether

  • Catalog number: RSL01204
  • Status: BackOrdered
  • Molecular formula: C14H12ClN3O4S2
  • CAS registry number: 2469039-23-2
  • Capacity: 50 mg
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Losartan Related Compound A

  • Catalog number: RSL01206
  • Status: BackOrdered
  • Molecular formula: C8H11ClN2O
  • CAS registry number: 83857-96-9
  • Capacity: 20 mg
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Losartan Related Compound B

  • Catalog number: RSL01207
  • Status: BackOrdered
  • Molecular formula: C24H25ClN6O2
  • CAS registry number: 1006062-27-6
  • Capacity: 20 mg
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Loxoprofen Impurity 1

  • Catalog number: RSL01212
  • Status: BackOrdered
  • Molecular formula: C7H10O3
  • CAS registry number: 10472-24-9
  • Capacity: 50 mg
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Loxoprofen Impurity 2

  • Catalog number: RSL01213
  • Status: BackOrdered
  • Molecular formula: C8H14O4
  • CAS registry number: 627-93-0
  • Capacity: 50 mg
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Loxoprofen Impurity 3

  • Catalog number: RSL01214
  • Status: BackOrdered
  • Molecular formula: C10H11BrO2
  • CAS registry number: 111128-12-2
  • Capacity: 50 mg
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Loxoprofen Impurity 4

  • Catalog number: RSL01215
  • Status: BackOrdered
  • Molecular formula: C9H10O2
  • CAS registry number: 492-37-5
  • Capacity: 50 mg
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Lisinopril Related Compound A

  • Catalog number: RSL01186
  • Status: BackOrdered
  • Molecular formula: C21H29N3O4
  • CAS registry number: 328385-86-0
  • Capacity: 250 mg
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Linezolid Desacetamide Hydroxy Impurity

  • Catalog number: RSL01182
  • Status: BackOrdered
  • Molecular formula: C14H17FN2O4
  • CAS registry number: 168828-82-8
  • Capacity: 25 mg
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Linezolid Amine Impurity

  • Catalog number: RSL01183
  • Status: BackOrdered
  • Molecular formula: C10H13FN2O
  • CAS registry number: 93246-53-8
  • Capacity: 25 mg
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Linagliptin Regio Isomer

  • Catalog number: RSL01156
  • Status: BackOrdered
  • Molecular formula: C25H28N8O2
  • CAS registry number: 1446263-38-2
  • Capacity: 10 mg
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Lidocaine Impurity A Hydrochloride

  • Catalog number: RSL01146
  • Status: BackOrdered
  • Molecular formula: C8H11N.ClH
  • CAS registry number: 21436-98-6
  • Capacity: 25 mg
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Lidocaine Impurity H

  • Catalog number: RSL01147
  • Status: BackOrdered
  • Molecular formula: C10H12ClNO
  • CAS registry number: 1131-01-7
  • Capacity: 50 mg
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Lidocaine Impurity I

  • Catalog number: RSL01148
  • Status: BackOrdered
  • Molecular formula: C14H22N2OHCl
  • CAS registry number: 17289-54-2
  • Capacity: 25 mg
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Lidocaine Dichloro Impurity

  • Catalog number: RSL01149
  • Status: BackOrdered
  • Molecular formula: C10H11NOCl2
  • CAS registry number: 39084-88-3
  • Capacity: 25 mg
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Linagliptin Impurity I

  • Catalog number: RSL01152
  • Status: BackOrdered
  • Molecular formula: C8H8O3
  • CAS registry number: 90-64-2
  • Capacity: 500 mg
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Linagliptin Amide Impurity

  • Catalog number: RSL01153
  • Status: BackOrdered
  • Molecular formula: C27H27F3N8O3
  • CAS registry number: 1673546-62-7
  • Capacity: 50 mg
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Linagliptin 2-Chloromethyl Impurity

  • Catalog number: RSL01155
  • Status: BackOrdered
  • Molecular formula: C10H9ClN2
  • CAS registry number: 109113-72-6
  • Capacity: 25 mg
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Linagliptin Bromobutene

  • Catalog number: RSL01158
  • Status: BackOrdered
  • Molecular formula: C25H29BrN8O2
  • CAS registry number: 1446263-39-3
  • Capacity: 10 mg
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Linagliptin Dimethylamino

  • Catalog number: RSL01160
  • Status: BackOrdered
  • Molecular formula: C22H23N7O2
  • CAS registry number: 1646355-34-1
  • Capacity: 50 mg
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Linagliptin 8-Bromo Impurity

  • Catalog number: RSL01163
  • Status: BackOrdered
  • Molecular formula: C6H5BrN4O2
  • CAS registry number: 93703-24-3
  • Capacity: 250 mg
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Linagliptin Impurity 1

  • Catalog number: RSL01164
  • Status: BackOrdered
  • Molecular formula: C20H17BrN6O2
  • CAS registry number: 853029-57-9
  • Capacity: 250 mg
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Linezolid Related Compound D

  • Catalog number: RSL01173
  • Status: BackOrdered
  • Molecular formula: C15H19FN2O6S
  • CAS registry number: 174649-09-3
  • Capacity: 20 mg
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Linezolid Impurity B

  • Catalog number: RSL01174
  • Status: BackOrdered
  • Molecular formula: C14H16ClFN2O3
  • CAS registry number: 496031-57-3
  • Capacity: 20 mg
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Linezolid Impurity D

  • Catalog number: RSL01175
  • Status: BackOrdered
  • Molecular formula: C15H22FN3O3.ClH
  • CAS registry number: 1391068-25-9
  • Capacity: 25 mg
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Linezolid Impurity D (Fumarate Salt)

  • Catalog number: RSL01176
  • Status: BackOrdered
  • Molecular formula: C15H22FN3O3.ClH
  • CAS registry number: 333753-69-8
  • Capacity: 25 mg
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Levofloxacin Related Compound A

  • Catalog number: RSL01134
  • Status: BackOrdered
  • Molecular formula: C17H18FN3O4
  • CAS registry number: 117707-40-1
  • Capacity: 25 mg
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Levofloxacin Related Compound B

  • Catalog number: RSL01135
  • Status: BackOrdered
  • Molecular formula: C13H9F2NO4
  • CAS registry number: 100986-89-8
  • Capacity: 35 mg
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Levofloxacin Related Compound E (Free Base)

  • Catalog number: RSL01136
  • Status: BackOrdered
  • Molecular formula: C16H18FN3O4.Cl H
  • CAS registry number: 151250-76-9
  • Capacity: 25 mg
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Levofloxacin Related Compound E (HCl Salt)

  • Catalog number: RSL01137
  • Status: BackOrdered
  • Molecular formula: C16H18FN3O4.HCl
  • CAS registry number: 1346603-62-0
  • Capacity: 25 mg
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Levofloxacin Related Compound F

  • Catalog number: RSL01138
  • Status: BackOrdered
  • Molecular formula: C18H21N3O4
  • CAS registry number: 117620-85-6
  • Capacity: 25 mg
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Lidocaine Impurity A

  • Catalog number: RSL01145
  • Status: BackOrdered
  • Molecular formula: C8H11N
  • CAS registry number: 87-62-7
  • Capacity: 100 mg
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Levodopa Impurity D

  • Catalog number: RSL01131
  • Status: BackOrdered
  • Molecular formula: C9H11NO4
  • CAS registry number: 5796-17-8
  • Capacity: 100 mg
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Levodopa Related Compound B

  • Catalog number: RSL01129
  • Status: BackOrdered
  • Molecular formula: C10H13NO4
  • CAS registry number: 7636-26-2
  • Capacity: 50 mg
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Levodopa Related Compound A

  • Catalog number: RSL01128
  • Status: BackOrdered
  • Molecular formula: C9H11NO5
  • CAS registry number: 27244-64-0
  • Capacity: 50 mg
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Levodopa

  • Catalog number: RSL01127
  • Status: BackOrdered
  • Molecular formula: C9H11NO4
  • CAS registry number: 59-92-7
  • Capacity: 200 mg
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Levocetirizine Impurity H

  • Catalog number: RSL01126
  • Status: BackOrdered
  • Molecular formula: C19H23ClN2O
  • CAS registry number: 109806-71-5
  • Capacity: 250 mg
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Levocetirizine Impurity 1

  • Catalog number: RSL01125
  • Status: BackOrdered
  • Molecular formula: C28H32ClN3O2
  • CAS registry number: 1150310-68-1
  • Capacity: 25 mg
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Levocetirizine Amide

  • Catalog number: RSL01124
  • Status: BackOrdered
  • Molecular formula: C21H26ClN3O2
  • CAS registry number: 909779-33-5
  • Capacity: 75 mg
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Levetiracetam Crotonamide

  • Catalog number: RSL01120
  • Status: BackOrdered
  • Molecular formula: C8H12N2O2
  • CAS registry number: 358629-47-7
  • Capacity: 10 mg
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Levetiracetam Impurity E ((R)-1-phenethylamine)

  • Catalog number: RSL01119
  • Status: BackOrdered
  • Molecular formula: C8H11N
  • CAS registry number: 3886-69-9
  • Capacity: 100 mg
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Levetiracetam Impurity C

  • Catalog number: RSL01118
  • Status: BackOrdered
  • Molecular formula: C5H5NO
  • CAS registry number: 142-08-5
  • Capacity: 15 mg
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Lercanidipine Related Compound C

  • Catalog number: RSL01104
  • Status: BackOrdered
  • Molecular formula: C38H45N3O6
  • CAS registry number: 1797124-83-4
  • Capacity: 10 mg
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Latanoprost Related Compound B

  • Catalog number: RSL01089
  • Status: BackOrdered
  • Molecular formula: C26H40O5
  • CAS registry number: 145773-22-4
  • Capacity: 25 mg
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Lenalidomide Open Ring

  • Catalog number: RSL01096
  • Status: BackOrdered
  • Molecular formula: C13H16N4O3
  • CAS registry number: 2197414-55-2
  • Capacity: 25 mg
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Lenalidomide Open Ring Diacid

  • Catalog number: RSL01097
  • Status: BackOrdered
  • Molecular formula: C13H14N2O5
  • CAS registry number: 295357-66-3
  • Capacity: 25 mg
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Lenalidomide Impurity 1

  • Catalog number: RSL02274
  • Status: BackOrdered
  • Molecular formula: C13H15N3O4
  • CAS registry number: 2197414-57-4
  • Capacity: 25 mg
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Lenalidomide Impurity 2

  • Catalog number: RSL02275
  • Status: BackOrdered
  • Molecular formula: C13H15N3O4
  • CAS registry number: 2197420-75-8
  • Capacity: 25 mg
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Lercanidipine Related Compound A

  • Catalog number: RSL01102
  • Status: BackOrdered
  • Molecular formula: C19H22N2O6
  • CAS registry number: 225785-54-6
  • Capacity: 10 mg
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Lercanidipine Related Compound B

  • Catalog number: RSL01103
  • Status: BackOrdered
  • Molecular formula: C21H24N2O6
  • CAS registry number: 77888-05-2
  • Capacity: 500 mg
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Lercanidipine Related Compound D

  • Catalog number: RSL01105
  • Status: BackOrdered
  • Molecular formula: C36 H39 N3 O6
  • CAS registry number: 887769-34-8
  • Capacity: 50 mg
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Letrozole Related Compound A

  • Catalog number: RSL01107
  • Status: BackOrdered
  • Molecular formula: C17H11N5
  • CAS registry number: 112809-52-6
  • Capacity: 25 mg
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Levetiracetam Acid

  • Catalog number: RSL01115
  • Status: BackOrdered
  • Molecular formula: C8H13NO3
  • CAS registry number: 102849-49-0
  • Capacity: 25 mg
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Levetiracetam Related Compound A

  • Catalog number: RSL01116
  • Status: BackOrdered
  • Molecular formula: C8H15ClN2O2
  • CAS registry number: 102767-31-7
  • Capacity: 20 mg
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Levetiracetam Related Compound B

  • Catalog number: RSL01117
  • Status: BackOrdered
  • Molecular formula: C4H10N2O.HCl
  • CAS registry number: 7682-20-4
  • Capacity: 20 mg
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Lansoprazole Impurity D

  • Catalog number: RSL01081
  • Status: BackOrdered
  • Molecular formula: C7H6N2O
  • CAS registry number: 615-16-7
  • Capacity: 25 mg
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Lacosamide Acrylamide Analog

  • Catalog number: RSL01062
  • Status: BackOrdered
  • Molecular formula: C12H14N2O2
  • CAS registry number: 86921-49-5
  • Capacity: 25 mg
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Labetalol Related Compound F

  • Catalog number: RSL01043
  • Status: BackOrdered
  • Molecular formula: C19H22N2O3.HCl
  • CAS registry number: 96441-14-4
  • Capacity: 15 mg
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Labetalol impurity B

  • Catalog number: RSL01045
  • Status: BackOrdered
  • Molecular formula: C20H25NO4.ClH
  • CAS registry number: 33778-93-7
  • Capacity: 25 mg
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Labetalol impurity D

  • Catalog number: RSL01047
  • Status: BackOrdered
  • Molecular formula: C9H12N2O3.HCl
  • CAS registry number: 32780-65-7
  • Capacity: 25 mg
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L-Lactic Acid

  • Catalog number: RSL01063
  • Status: BackOrdered
  • Molecular formula: C3H6O3
  • CAS registry number: 79-33-4
  • Capacity: 1.5 mL/ampule; 3 ampules
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Lactose (Anhydrous)

  • Catalog number: RSL01065
  • Status: BackOrdered
  • Molecular formula: C12H22O11
  • CAS registry number: 63-42-3
  • Capacity: 100 mg
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Lamotrigine Related Compound B

  • Catalog number: RSL01072
  • Status: BackOrdered
  • Molecular formula: C7H4Cl2O2
  • CAS registry number: 50-45-3
  • Capacity: 20 mg
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Lamotrigine Related Compound C

  • Catalog number: RSL01073
  • Status: BackOrdered
  • Molecular formula: C9H6Cl2N4O
  • CAS registry number: 252186-78-0
  • Capacity: 10 mg
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Lamotrigine Diamide

  • Catalog number: RSL01075
  • Status: BackOrdered
  • Molecular formula: C23H11Cl6N5O2
  • CAS registry number: 1373393-59-9
  • Capacity: 50 mg
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Lansoprazole Impurity A

  • Catalog number: RSL01077
  • Status: BackOrdered
  • Molecular formula: C16H14F3N3O3S
  • CAS registry number: 213476-12-1
  • Capacity: 25 mg
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Lansoprazole Related Compound A

  • Catalog number: RSL01078
  • Status: BackOrdered
  • Molecular formula: C16H14F3N3O3S
  • CAS registry number: 131926-99-3
  • Capacity: 25 mg
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Lansoprazole Impurity C (Lansoprazole Sulfide)

  • Catalog number: RSL01080
  • Status: BackOrdered
  • Molecular formula: C16H14F3N3OS
  • CAS registry number: 103577-40-8
  • Capacity: 25 mg
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Lansoprazole Impurity E (2-Mercaptobenzimidazole)

  • Catalog number: RSL01082
  • Status: BackOrdered
  • Molecular formula: C7H6N2S
  • CAS registry number: 583-39-1
  • Capacity: 25 mg
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Lansoprazole Chloromethyl Impurity

  • Catalog number: RSL01083
  • Status: BackOrdered
  • Molecular formula: C9H9ClF3NO.ClH
  • CAS registry number: 127337-60-4
  • Capacity: 25 mg
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Lamotrigine Related Compound D

  • Catalog number: RSL01074
  • Status: BackOrdered
  • Molecular formula: C16H9Cl4N5O
  • CAS registry number: 252186-79-1
  • Capacity: 10 mg
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Lacosamide Impurity G

  • Catalog number: RSL01055
  • Status: BackOrdered
  • Molecular formula: C9H11NO
  • CAS registry number: 588-46-5
  • Capacity: 25 mg
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Lacosamide Impurity B

  • Catalog number: RSL01050
  • Status: BackOrdered
  • Molecular formula: C14H18N2O4
  • CAS registry number: 1318777-54-6
  • Capacity: 10 mg
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Lacosamide Impurity F (R-isomer)

  • Catalog number: RSL01053
  • Status: BackOrdered
  • Molecular formula: C12H16N2O3
  • CAS registry number: 175481-38-6
  • Capacity: 25 mg
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Lacosamide Impurity F (Racemate)

  • Catalog number: RSL01054
  • Status: BackOrdered
  • Molecular formula: C12H16N2O3
  • CAS registry number: 171623-02-2
  • Capacity: 30 mg
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Lacosamide S-Enantiomer

  • Catalog number: RSL01058
  • Status: BackOrdered
  • Molecular formula: C13H18N2O3
  • CAS registry number: 175481-37-5
  • Capacity: 30 mg
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L-Alanyl-L-proline Impurity

  • Catalog number: RSE00785
  • Status: BackOrdered
  • Molecular formula: C8H14N2O3
  • CAS registry number: 13485-59-1
  • Capacity: 25 mg
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Levamlodipine

  • Catalog number: RSA00105
  • Status: BackOrdered
  • Molecular formula: C20H25ClN2O5
  • CAS registry number: 103129-82-4
  • Capacity: 25 mg
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Loratadine Impurity F

  • Catalog number: RSL01197
  • Status: BackOrdered
  • Molecular formula: C22H24ClFN2O2
  • CAS registry number: 125743-80-8
  • Capacity: 25 mg
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Linezolid Related Compound B

  • Catalog number: RSL01171
  • Status: BackOrdered
  • Molecular formula: C16H20FN3O3S
  • CAS registry number: 216868-57-4
  • Capacity: 20 mg
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Linezolid Related Compound A

  • Catalog number: RSL01170
  • Status: BackOrdered
  • Molecular formula: C14H16FN5O3
  • CAS registry number: 168828-84-0
  • Capacity: 20 mg
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Linezolid Related Compound C

  • Catalog number: RSL01172
  • Status: BackOrdered
  • Molecular formula: C14H18FN3O3
  • CAS registry number: 168828-90-8
  • Capacity: 20 mg
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Latanoprost Related Compound E

  • Catalog number: RSL01090
  • Status: BackOrdered
  • Molecular formula: C23H34O5
  • CAS registry number: 41639-83-2
  • Capacity: 25 mg
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