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Home → Products → Impurities Certified Reference Materials → R
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Impurities Certified Reference Materials

Tretinoin Impurity F (4-Methoxy Retinoic Acid)

  • Catalog number: RST02043
  • Status: BackOrdered
  • Molecular formula: C21H30O3
  • CAS registry number: 81121-20-2
  • Capacity: 20 mg
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Racemic Tamsulosin Hydrochloride

  • Catalog number: RST01966
  • Status: BackOrdered
  • Molecular formula: C20H28N2O5S.HCl
  • CAS registry number: 80223-99-0
  • Capacity: 25 mg
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rac-Sitagliptin Hydrochloride

  • Catalog number: RSS01895
  • Status: BackOrdered
  • Molecular formula: C16H16ClF6N5O
  • CAS registry number: 2309520-11-2
  • Capacity: 25 mg
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Roflumilast N-Oxide

  • Catalog number: RSR01832
  • Status: BackOrdered
  • Molecular formula: C17H14Cl2F2N2O4
  • CAS registry number: 292135-78-5
  • Capacity: 50 mg
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Roflumilast Related Compound A

  • Catalog number: RSR01827
  • Status: BackOrdered
  • Molecular formula: C16H14Cl2N2O3
  • CAS registry number: 475271-62-6
  • Capacity: 30 mg
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Roflumilast Related Compound B

  • Catalog number: RSR01828
  • Status: BackOrdered
  • Molecular formula: C13H8Cl2F2N2O3
  • CAS registry number: 1391052-76-8
  • Capacity: 30 mg
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Roflumilast Related Compound C

  • Catalog number: RSR01829
  • Status: BackOrdered
  • Molecular formula: C5H4Cl2N2
  • CAS registry number: 22889-78-7
  • Capacity: 50 mg
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Roflumilast Related Compound D

  • Catalog number: RSR01830
  • Status: BackOrdered
  • Molecular formula: C12H12F2O4
  • CAS registry number: 162401-62-9
  • Capacity: 50 mg
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Rosuvastatin Related Compound C

  • Catalog number: RSR01837
  • Status: BackOrdered
  • Molecular formula: C29H40FN3O6S
  • CAS registry number: 289042-12-2
  • Capacity: 25 mg
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Rosuvastatin Ethyl Ester

  • Catalog number: RSR01840
  • Status: BackOrdered
  • Molecular formula: C24H32FN3O6S
  • CAS registry number: 851443-04-4
  • Capacity: 25 mg
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Rosuvastatin Isoamyl Ester

  • Catalog number: RSR01841
  • Status: BackOrdered
  • Molecular formula: C27H38FN3O6S
  • CAS registry number: 1197348-98-3
  • Capacity: 25 mg
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Rosuvastatin Methyl Ester

  • Catalog number: RSR01844
  • Status: BackOrdered
  • Molecular formula: C23H30FN3O6S
  • CAS registry number: 147118-40-9
  • Capacity: 25 mg
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Rupatadine Impurity A

  • Catalog number: RSR01848
  • Status: BackOrdered
  • Molecular formula: C30H31ClN3O4
  • CAS registry number: 1354055-68-7
  • Capacity: 10 mg
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Rupatadine Impurity B

  • Catalog number: RSR01849
  • Status: BackOrdered
  • Molecular formula: C19H19ClN2
  • CAS registry number: 100643-71-8
  • Capacity: 15 mg
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Rupatadine Fumarate Impurity B

  • Catalog number: RSR01850
  • Status: BackOrdered
  • Molecular formula: C26H24ClN3O
  • CAS registry number: 156523-04-5
  • Capacity: 25 mg
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Rivaroxaban Impurity 86

  • Catalog number: RSR01813
  • Status: BackOrdered
  • Molecular formula: C8H4NO2:K
  • CAS registry number: 1074-82-4
  • Capacity: 100 mg
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Rivaroxaban Phthalimide ((S)-2-(2-hydroxy

  • Catalog number: RSR01808
  • Status: BackOrdered
  • Molecular formula: C21H21N3O5
  • CAS registry number: 1369969-44-7
  • Capacity: 25 mg
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Rivaroxaban Phthalimido Analog

  • Catalog number: RSR01809
  • Status: BackOrdered
  • Molecular formula: C21H21N3O5
  • CAS registry number: 446292-07-5
  • Capacity: 25 mg
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Rivaroxaban Phthalimido Ethyl Ester Analog

  • Catalog number: RSR01810
  • Status: BackOrdered
  • Molecular formula: C29H26ClN3O8S
  • CAS registry number: 2206826-56-2
  • Capacity: 25 mg
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4-(4-Nitrophenyl)morpholin-3-one

  • Catalog number: RSR01811
  • Status: BackOrdered
  • Molecular formula: C10H10N2O4
  • CAS registry number: 446292-04-2
  • Capacity: 100 mg
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Rivaroxaban Impurity 85

  • Catalog number: RSR01812
  • Status: BackOrdered
  • Molecular formula: C8H5NO2
  • CAS registry number: 85-41-6
  • Capacity: 10 mg
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Rivastigmine Related Compound A

  • Catalog number: RSR01817
  • Status: BackOrdered
  • Molecular formula: C20H18O8
  • CAS registry number: 32634-68-7
  • Capacity: 15 mg
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Rivastigmine Related Compound B

  • Catalog number: RSR01818
  • Status: BackOrdered
  • Molecular formula: C13H20N2O2
  • CAS registry number: 25081-93-0
  • Capacity: 15 mg
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Rivastigmine Related Compound C

  • Catalog number: RSR01819
  • Status: BackOrdered
  • Molecular formula: C10H15NO
  • CAS registry number: 139306-10-8
  • Capacity: 15 mg
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Rivastigmine Related Compound D

  • Catalog number: RSR01820
  • Status: BackOrdered
  • Molecular formula: C12H15NO3
  • CAS registry number: 855300-09-3
  • Capacity: 50 mg
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Rivastigmine Related Compound F

  • Catalog number: RSR01822
  • Status: BackOrdered
  • Molecular formula: C12H15NO2
  • CAS registry number: 1346602-84-3
  • Capacity: 25 mg
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N-Desmethyl Rivastigmine

  • Catalog number: RSR01824
  • Status: BackOrdered
  • Molecular formula: C13H20N2O2
  • CAS registry number: 1070660-34-2
  • Capacity: 50 mg
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Rivastigmine N-Oxide HCl

  • Catalog number: RSR01825
  • Status: BackOrdered
  • Molecular formula: C14H22N2O3
  • CAS registry number: 1369779-37-2
  • Capacity: 25 mg
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Rivaroxaban Open Oxomorpholine Ring

  • Catalog number: RSR01803
  • Status: BackOrdered
  • Molecular formula: C19H20ClN3O6S
  • CAS registry number: 1160170-00-2
  • Capacity: 10 mg
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Rivaroxaban Related Compound J

  • Catalog number: RSR01791
  • Status: BackOrdered
  • Molecular formula: C38H36Cl2N6O10S2
  • CAS registry number: 1632463-24-1
  • Capacity: 20 mg
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Rivaroxaban Amine

  • Catalog number: RSR01793
  • Status: BackOrdered
  • Molecular formula: C14H17N3O4.HCl
  • CAS registry number: 898543-06-1
  • Capacity: 25 mg
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Rivaroxaban Desmorpholinone Analog

  • Catalog number: RSR01794
  • Status: BackOrdered
  • Molecular formula: C17H18ClN3O4S
  • CAS registry number: 936232-22-3
  • Capacity: 25 mg
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Rivaroxaban Desthiophene Analog

  • Catalog number: RSR01795
  • Status: BackOrdered
  • Molecular formula: C14H17N3O4
  • CAS registry number: 1411775-06-8
  • Capacity: 25 mg
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Rivaroxaban Ethyl Carbamate

  • Catalog number: RSR01796
  • Status: BackOrdered
  • Molecular formula: C13H16N2O4
  • CAS registry number: 1327778-39-1
  • Capacity: 25 mg
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Rivaroxaban Glycolic Acid Analog

  • Catalog number: RSR01798
  • Status: BackOrdered
  • Molecular formula: C19H20ClN3O6S
  • CAS registry number: 931204-39-6
  • Capacity: 25 mg
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Rivaroxaban Isomer

  • Catalog number: RSR01799
  • Status: BackOrdered
  • Molecular formula: C18H18ClN3O3S
  • CAS registry number: 2310316-95-9
  • Capacity: 25 mg
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Rivaroxaban N-acyl Glycolic Acid

  • Catalog number: RSR01800
  • Status: BackOrdered
  • Molecular formula: C24H21Cl2N3O7S2
  • CAS registry number: 1151893-81-0
  • Capacity: 25 mg
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Rivaroxaban N-methylphthalamido Analog

  • Catalog number: RSR01801
  • Status: BackOrdered
  • Molecular formula: C23H24N4O6
  • CAS registry number: 2206360-74-7
  • Capacity: 25 mg
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Rivaroxaban Open Chain Dithiophene Analog

  • Catalog number: RSR01802
  • Status: BackOrdered
  • Molecular formula: C25H24Cl2N4O6S2
  • CAS registry number: 1807455-76-0
  • Capacity: 10 mg
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Rivaroxaban Open Ring

  • Catalog number: RSR01804
  • Status: BackOrdered
  • Molecular formula: C18H20ClN3O4S
  • CAS registry number: 721401-53-2
  • Capacity: 10 mg
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Rivaroxaban Open Ring Methylamine

  • Catalog number: RSR01805
  • Status: BackOrdered
  • Molecular formula: C14H21N3O3
  • CAS registry number: 2459303-14-9
  • Capacity: 10 mg
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Rivaroxaban Open Ring S-isomer

  • Catalog number: RSR01806
  • Status: BackOrdered
  • Molecular formula: C18H20ClN3O4S
  • CAS registry number: 1325210-62-5
  • Capacity: 10 mg
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Rivaroxaban Phthalamide (N1,N2-bis(((S)

  • Catalog number: RSR01807
  • Status: BackOrdered
  • Molecular formula: C36H36N6O10
  • CAS registry number: 1365267-36-2
  • Capacity: 25 mg
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Rivaroxaban Impurity F

  • Catalog number: RSR01788
  • Status: BackOrdered
  • Molecular formula: C5H3ClO2S
  • CAS registry number: 24065-33-6
  • Capacity: 25 mg
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Rivaroxaban Related Compound G

  • Catalog number: RSR01789
  • Status: BackOrdered
  • Molecular formula: C22H19N3O6
  • CAS registry number: 446292-08-6
  • Capacity: 20 mg
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Rivaroxaban Related Compound H

  • Catalog number: RSR01790
  • Status: BackOrdered
  • Molecular formula: C19H17Cl2N3O5S
  • CAS registry number: 1770812-37-7
  • Capacity: 20 mg
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Risperidone Impurity K

  • Catalog number: RSR01781
  • Status: BackOrdered
  • Molecular formula: C23H28N4O2
  • CAS registry number: 106266-09-5
  • Capacity: 25 mg
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Risperidone Impurity I

  • Catalog number: RSR01780
  • Status: BackOrdered
  • Molecular formula: C36H39F2N5O3
  • CAS registry number: 1329796-66-8
  • Capacity: 25 mg
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Repaglinide Related Compound C

  • Catalog number: RSR01761
  • Status: BackOrdered
  • Molecular formula: C30H34N2O4
  • CAS registry number: 1803084-79-8
  • Capacity: 25 mg
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Repaglinide Related Compound E

  • Catalog number: RSR01762
  • Status: BackOrdered
  • Molecular formula: C27H36N2O4
  • CAS registry number: 147852-26-4
  • Capacity: 20 mg
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Ribavirin Related Compound A

  • Catalog number: RSR01764
  • Status: BackOrdered
  • Molecular formula: C8H11N3O6
  • CAS registry number: 39925-19-4
  • Capacity: 15 mg
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Ribavirin Related Compound D

  • Catalog number: RSR01765
  • Status: BackOrdered
  • Molecular formula: C3H4N4O
  • CAS registry number: (3641-08-5)
  • Capacity: 15 mg
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Risperidone Impurity A

  • Catalog number: RSR01770
  • Status: BackOrdered
  • Molecular formula: C23H28F2N4O2
  • CAS registry number: 691007-09-7
  • Capacity: 25 mg
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Risperidone Impurity B

  • Catalog number: RSR01771
  • Status: BackOrdered
  • Molecular formula: C23H28F2N4O2
  • CAS registry number: 132961-05-8
  • Capacity: 25 mg
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Risperidone Impurity C

  • Catalog number: RSR01772
  • Status: BackOrdered
  • Molecular formula: C23H27FN4O3
  • CAS registry number: 144598-75-4
  • Capacity: 200 mg
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Risperidone Impurity C ((R)-Isomer)

  • Catalog number: RSR01773
  • Status: BackOrdered
  • Molecular formula: C23H27FN4O3
  • CAS registry number: 130049-85-3
  • Capacity: 10 mg
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Risperidone Impurity C ((S)-Isomer)

  • Catalog number: RSR01774
  • Status: BackOrdered
  • Molecular formula: C23H27FN4O3
  • CAS registry number: 147663-01-2
  • Capacity: 10 mg
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Risperidone Impurity D

  • Catalog number: RSR01775
  • Status: BackOrdered
  • Molecular formula: C23H27FN4O2
  • CAS registry number: 1199589-74-6
  • Capacity: 25 mg
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Risperidone Impurity E

  • Catalog number: RSR01776
  • Status: BackOrdered
  • Molecular formula: C24H29FN4O2
  • CAS registry number: 1346602-28-5
  • Capacity: 25 mg
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Risperidone Impurity F

  • Catalog number: RSR01777
  • Status: BackOrdered
  • Molecular formula: C24H27FN4O4
  • CAS registry number: 1346603-86-8
  • Capacity: 25 mg
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Risperidone Related Compound G

  • Catalog number: RSR01778
  • Status: BackOrdered
  • Molecular formula: C23H28FN3O3
  • CAS registry number: 152542-00-2
  • Capacity: 25 mg
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Risperidone Impurity H

  • Catalog number: RSR01779
  • Status: BackOrdered
  • Molecular formula: C23H27F2N3O2
  • CAS registry number: 158697-67-7
  • Capacity: 10 mg
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Rabeprazole Methoxy Analog

  • Catalog number: RSR01744
  • Status: BackOrdered
  • Molecular formula: C15H15N3O2S
  • CAS registry number: 102804-77-3
  • Capacity: 25 mg
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Rabeprazole Related Compound B

  • Catalog number: RSR01739
  • Status: BackOrdered
  • Molecular formula: C18H21N3O4S
  • CAS registry number: 924663-38-7
  • Capacity: 15 mg
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Rabeprazole Related Compound C

  • Catalog number: RSR01740
  • Status: BackOrdered
  • Molecular formula: C7H6N2S
  • CAS registry number: 583-39-1
  • Capacity: 25 mg
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Rabeprazole Related Compound F

  • Catalog number: RSR01743
  • Status: BackOrdered
  • Molecular formula: C14H12ClN3OS
  • CAS registry number: 168167-42-8
  • Capacity: 15 mg
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Racecadotril Impurity A

  • Catalog number: RSR02303
  • Status: BackOrdered
  • Molecular formula: C2H4OS
  • CAS registry number: 507-09-5
  • Capacity: 25 mg
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Racecadotril Impurity G

  • Catalog number: RSR02304
  • Status: BackOrdered
  • Molecular formula: C19H21NO3S
  • CAS registry number: 81110-69-2
  • Capacity: 15 mg
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Ranolazine Related Compound C

  • Catalog number: RSR01749
  • Status: BackOrdered
  • Molecular formula: C14H21N3O
  • CAS registry number: 5294-61-1
  • Capacity: 50 mg
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Ranolazine Related Compound A

  • Catalog number: RSR01747
  • Status: BackOrdered
  • Molecular formula: C10H12O3
  • CAS registry number: 2210-74-4
  • Capacity: 50 mg
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Ranolazine Related Compound D

  • Catalog number: RSR01750
  • Status: BackOrdered
  • Molecular formula: C24H32N4O2
  • CAS registry number: 380204-72-8
  • Capacity: 50 mg
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Rasagiline Impurity 10

  • Catalog number: RSR01754
  • Status: BackOrdered
  • Molecular formula: C9H11N.ClH
  • CAS registry number: 34698-41-4
  • Capacity: 25 mg
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Repaglinide Related Compound B

  • Catalog number: RSR01760
  • Status: BackOrdered
  • Molecular formula: C13H16O5
  • CAS registry number: 99469-99-5
  • Capacity: 50 mg
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rac-5,6-Dehydropregabalin

  • Catalog number: RSP01681
  • Status: BackOrdered
  • Molecular formula: C8H15NO2
  • CAS registry number: 1136478-30-2
  • Capacity: 25 mg
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rac-4,5-Dehydropregabalin

  • Catalog number: RSP01680
  • Status: BackOrdered
  • Molecular formula: C8H15NO2
  • CAS registry number: 216576-74-8
  • Capacity: 25 mg
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rac-Pregabalin Imide Dimer Amide

  • Catalog number: RSP01679
  • Status: BackOrdered
  • Molecular formula: C16H32N2O3
  • CAS registry number: 1486961-58-3
  • Capacity: 25 mg
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R-Levetiracetam Hydroxybutyramide Analog

  • Catalog number: RSL01121
  • Status: BackOrdered
  • Molecular formula: C8H16N2O3
  • CAS registry number: 1847568-87-9
  • Capacity: 10 mg
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rac-Domperidone Impurity C

  • Catalog number: RSD00702
  • Status: BackOrdered
  • Molecular formula: C22H24ClN5O3
  • CAS registry number: 118435-03-3
  • Capacity: 25 mg
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R-Citalopram Oxalate

  • Catalog number: RSC00486
  • Status: BackOrdered
  • Molecular formula: C20H21FN2O.C2H2O4
  • CAS registry number: 219861-53-7
  • Capacity: 10 mg
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Rabeprazole Related Compound E

  • Catalog number: RLP-003
  • Status: In stock
  • Molecular formula: C18H21N3O2S
  • CAS registry number: 117977-21-6
  • Capacity: 25 mg
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Rabeprazole Related Compound D

  • Catalog number: RLP-002
  • Status: In stock
  • Molecular formula: C18H21N3O4S
  • CAS registry number: 117976-47-3
  • Capacity: 25 mg
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Rosuvastatin Related compound B

  • Catalog number: RSR01836
  • Status: BackOrdered
  • Molecular formula: Ca(C38H45F2N6O9S2)2
  • CAS registry number: N/A
  • Capacity: 25 mg
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Racecadotril Impurity G

  • Catalog number: RSR02304
  • Status: BackOrdered
  • Molecular formula: C19H21NO3S
  • CAS registry number: 81110-69-2
  • Capacity: 15 mg
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Racecadotril impurity A

  • Catalog number: RSR02303
  • Status: BackOrdered
  • Molecular formula: C2H4OS
  • CAS registry number: 507-09-5
  • Capacity: 25 mg
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Rivaroxaban Impurity E

  • Catalog number: RSR01787
  • Status: BackOrdered
  • Molecular formula: C19H19N3O5S
  • CAS registry number: 1415566-28-7
  • Capacity: 25 mg
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Rivaroxaban Related Compound H

  • Catalog number: RSR01790
  • Status: BackOrdered
  • Molecular formula: C19H17Cl2N3O5S
  • CAS registry number: 1770812-37-7
  • Capacity: 20 mg
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Rivaroxaban Related Compound D

  • Catalog number: RSR01786
  • Status: BackOrdered
  • Molecular formula: C29H32N6O9
  • CAS registry number: 1365267-35-1
  • Capacity: 20 mg
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Rivaroxaban Related Compound B

  • Catalog number: RSR01785
  • Status: BackOrdered
  • Molecular formula: C16H19N3O5
  • CAS registry number: 1429334-00-8
  • Capacity: 20 mg
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Rivaroxaban Impurity A

  • Catalog number: RSR01792
  • Status: BackOrdered
  • Molecular formula: C19H18ClN3O5S
  • CAS registry number: 865479-71-6
  • Capacity: 20 mg
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Rosuvastatin impurity G

  • Catalog number: RSR01838
  • Status: BackOrdered
  • Molecular formula: C22H27FN3NaO6S
  • CAS registry number: 1242184-42-4
  • Capacity: 1 mg
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Rosuvastatin Lactone

  • Catalog number: RSR01843
  • Status: BackOrdered
  • Molecular formula: C22H26FN3O5S
  • CAS registry number: 503610-43-3
  • Capacity: 25 mg
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Rosuvastatin Ketone

  • Catalog number: RSR01842
  • Status: BackOrdered
  • Molecular formula: C22H26FN3O6S
  • CAS registry number: 1422619-13-3
  • Capacity: 25 mg
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Rosuvastatin Related Compound A

  • Catalog number: RSR01835
  • Status: BackOrdered
  • Molecular formula: 2C25H33FN3O7S.Ca
  • CAS registry number: 1714147-47-3
  • Capacity: 25 mg
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