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Impurities Certified Reference Materials

Theophylline-Ethylenediamine Impurity D

  • Catalog number: RSA00078
  • Status: BackOrdered
  • Molecular formula: C6H10N4O
  • CAS registry number: 6736-40-9
  • Capacity: 25 mg
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Trimethoprim Impurity J

  • Catalog number: RST02056
  • Status: BackOrdered
  • Molecular formula: C10H12O5
  • CAS registry number: 118-41-2
  • Capacity: 25 mg
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Trimethoprim Impurity H

  • Catalog number: RST02054
  • Status: BackOrdered
  • Molecular formula: C11H14O5
  • CAS registry number: 1916-07-0
  • Capacity: 25 mg
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Trimethoprim Impurity G

  • Catalog number: RST02053
  • Status: BackOrdered
  • Molecular formula: C15H20N4O3
  • CAS registry number: 78025-68-0
  • Capacity: 25 mg
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Trimethoprim Impurity F

  • Catalog number: RST02052
  • Status: BackOrdered
  • Molecular formula: C13H15BrN4O2
  • CAS registry number: 16285-82-8
  • Capacity: 25 mg
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Trimethoprim Impurity E

  • Catalog number: RST02051
  • Status: BackOrdered
  • Molecular formula: C14H17N3O4
  • CAS registry number: 60729-91-1
  • Capacity: 25 mg
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Trimethoprim Impurity D

  • Catalog number: RST02050
  • Status: BackOrdered
  • Molecular formula: C14H17N3O4
  • CAS registry number: 92440-76-1
  • Capacity: 25 mg
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Torsemide Related Compound A

  • Catalog number: RST02035
  • Status: BackOrdered
  • Molecular formula: C12H13N3O2S
  • CAS registry number: 72811-73-5
  • Capacity: 75 mg
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Topiramate Impurity A

  • Catalog number: RST02030
  • Status: BackOrdered
  • Molecular formula: C12H20O6
  • CAS registry number: 20880-92-6
  • Capacity: 25 mg
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Topiramate Impurity C

  • Catalog number: RST02032
  • Status: BackOrdered
  • Molecular formula: C9H17NO8S
  • CAS registry number: 106881-41-8
  • Capacity: 25 mg
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Topiramate Impurity B

  • Catalog number: RST02031
  • Status: BackOrdered
  • Molecular formula: C17H30N2O9S
  • CAS registry number: 876403-98-4
  • Capacity: 25 mg
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Tolperisone Impurity 4 (4-Methylpropiophenone)

  • Catalog number: RST02027
  • Status: BackOrdered
  • Molecular formula: C10H12O
  • CAS registry number: 5337-93-9
  • Capacity: 100 mg
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Tolperisone Impurity 2 (Carboxy Tolperisone HCl)

  • Catalog number: RST02026
  • Status: BackOrdered
  • Molecular formula: C16H21NO3.HCl
  • CAS registry number: 446063-44-1
  • Capacity: 25 mg
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Tolperisone Impurity 1

  • Catalog number: RST02025
  • Status: BackOrdered
  • Molecular formula: C11H12O
  • CAS registry number: 62834-89-3
  • Capacity: 25 mg
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Tizanidine Impurity B

  • Catalog number: RST02320
  • Status: BackOrdered
  • Molecular formula: C7H5ClN4S2
  • CAS registry number: 51323-05-8
  • Capacity: 50 mg
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Tizanidine Related Compound B

  • Catalog number: RST02319
  • Status: BackOrdered
  • Molecular formula: C11H10ClN5OS
  • CAS registry number: 173532-15-5
  • Capacity: 50 mg
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Tizanidine Related Compound C

  • Catalog number: RST02318
  • Status: BackOrdered
  • Molecular formula: C5H8N2OS
  • CAS registry number: 5391-52-6
  • Capacity: 50 mg
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Torsemide Related Compound C

  • Catalog number: RST02037
  • Status: BackOrdered
  • Molecular formula: C15H18N4O3S
  • CAS registry number: 58155-35-4
  • Capacity: 30 mg
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Tranexamic acid impurity B

  • Catalog number: RST02322
  • Status: BackOrdered
  • Molecular formula: C8H15NO2
  • CAS registry number: 1197-17-7
  • Capacity: 15 mg
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Torsemide Related Compound B

  • Catalog number: RST02036
  • Status: BackOrdered
  • Molecular formula: C17H22N4O3S
  • CAS registry number: 160972-33-8
  • Capacity: 50 mg
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Tranexamic acid impurity C

  • Catalog number: RST02323
  • Status: BackOrdered
  • Molecular formula: C8H13NO2
  • CAS registry number: 330838-52-3
  • Capacity: 10 mg
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Tretinoin Impurity A (13-cis-Retinoic Acid)

  • Catalog number: RST02039
  • Status: BackOrdered
  • Molecular formula: C20H28O2
  • CAS registry number: 4759-48-2
  • Capacity: 200 mg
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Trihexyphenidyl Related Compound A

  • Catalog number: RST02045
  • Status: BackOrdered
  • Molecular formula: C14H19NO.HCl
  • CAS registry number: 886-06-6
  • Capacity: 20 mg
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Trimethoprim Impurity A

  • Catalog number: RST02047
  • Status: BackOrdered
  • Molecular formula: C15H20N4O3
  • CAS registry number: 213745-86-9
  • Capacity: 25 mg
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Trimethoprim Impurity B

  • Catalog number: RST02048
  • Status: BackOrdered
  • Molecular formula: C14H16N4O4
  • CAS registry number: 30806-86-1
  • Capacity: 25 mg
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Trimethoprim Impurity C

  • Catalog number: RST02049
  • Status: BackOrdered
  • Molecular formula: C14H18N4O4
  • CAS registry number: 29606-06-2
  • Capacity: 25 mg
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Theophylline Impurity A

  • Catalog number: RST02001
  • Status: BackOrdered
  • Molecular formula: C8H10N4O2
  • CAS registry number: 58-08-2
  • Capacity: 200 mg
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Theophylline Related Compound C

  • Catalog number: RST02003
  • Status: BackOrdered
  • Molecular formula: C7H10N4O3
  • CAS registry number: 7597-60-6
  • Capacity: 25 mg
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Theophylline Impurity D

  • Catalog number: RST02004
  • Status: BackOrdered
  • Molecular formula: C6H10N4O
  • CAS registry number: 6736-40-9
  • Capacity: 25 mg
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Theophylline Related Compound F

  • Catalog number: RST02006
  • Status: BackOrdered
  • Molecular formula: C9H12N4O3
  • CAS registry number: 519-37-9
  • Capacity: 25 mg
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Thymolphthalein

  • Catalog number: RST02009
  • Status: BackOrdered
  • Molecular formula: C28H30O4
  • CAS registry number: 125-20-2
  • Capacity: 100 mg
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Ticagrelor Related Compound A

  • Catalog number: RST02011
  • Status: BackOrdered
  • Molecular formula: C9H9F2N.C8H8O3
  • CAS registry number: 376608-71-8
  • Capacity: 25 mg
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Ticagrelor Impurity A

  • Catalog number: RST02013
  • Status: BackOrdered
  • Molecular formula: C14H22N6O4S
  • CAS registry number: 1251765-07-7
  • Capacity: 25 mg
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Ticagrelor Impurity C

  • Catalog number: RST02015
  • Status: BackOrdered
  • Molecular formula: C25H30F2N6O5S
  • CAS registry number: 1616703-93-5
  • Capacity: 25 mg
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Ticagrelor Impurity D

  • Catalog number: RST02016
  • Status: BackOrdered
  • Molecular formula: C26H32F2N6O4S
  • CAS registry number: 274693-26-4
  • Capacity: 10 mg
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Ticagrelor Sulfoxide

  • Catalog number: RST02018
  • Status: BackOrdered
  • Molecular formula: C23H28F2N6O5S
  • CAS registry number: 1644461-85-7
  • Capacity: 25 mg
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Ticagrelor Impurity 83

  • Catalog number: RST02019
  • Status: BackOrdered
  • Molecular formula: C23H28F2N6O6S
  • CAS registry number: 274693-39-9
  • Capacity: 25 mg
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Tirofiban Impurity 81

  • Catalog number: RST02022
  • Status: BackOrdered
  • Molecular formula: C22H30N2O5S
  • CAS registry number: 149490-61-9
  • Capacity: 50 mg
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Tirofiban Impurity 82

  • Catalog number: RST02023
  • Status: BackOrdered
  • Molecular formula: C13H19NO5S
  • CAS registry number: 149490-60-8
  • Capacity: 100 mg
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Tizanidine Impurity E

  • Catalog number: RST02317
  • Status: BackOrdered
  • Molecular formula: C6H4ClN3S
  • CAS registry number: 30536-19-7
  • Capacity: 50 mg
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N-Nitroso N-Methyl-1-naphthylmethylamine

  • Catalog number: RST01999
  • Status: BackOrdered
  • Molecular formula: C12H12N2O
  • CAS registry number: 296760-88-8
  • Capacity: 1 mL (1 mg/mL)
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Terbinafine Dimer Dihydrochloride

  • Catalog number: RST01998
  • Status: BackOrdered
  • Molecular formula: C36H40N2.2HCl
  • CAS registry number: 2749974-00-1
  • Capacity: 25 mg
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Terazosin Related Compound C

  • Catalog number: RST01992
  • Status: BackOrdered
  • Molecular formula: C24H28N8O4.2HCl
  • CAS registry number: 1486464-41-8
  • Capacity: 25 mg
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Terazosin Related Compound B

  • Catalog number: RST01991
  • Status: BackOrdered
  • Molecular formula: C19H24N4O5
  • CAS registry number: 1177261-73-2
  • Capacity: 50 mg
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Terazosin Related Compound A

  • Catalog number: RST01990
  • Status: BackOrdered
  • Molecular formula: C14H19N5O2.2HCl
  • CAS registry number: 60548-08-5
  • Capacity: 50 mg
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Telmisartan Related Compound B

  • Catalog number: RST01977
  • Status: BackOrdered
  • Molecular formula: C33H30N4O2
  • CAS registry number: 1026353-20-7
  • Capacity: 15 mg
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Tadalafil Impurity C

  • Catalog number: RST01952
  • Status: BackOrdered
  • Molecular formula: C22H19N3O4
  • CAS registry number: 171596-28-4
  • Capacity: 50 mg
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Tamsulosin Impurity C (Desethoxy Tamsulosin)

  • Catalog number: RST01959
  • Status: BackOrdered
  • Molecular formula: C18H24N2O4S
  • CAS registry number: 2244986-82-9
  • Capacity: 250 mg
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Tamsulosin Impurity E

  • Catalog number: RST01961
  • Status: BackOrdered
  • Molecular formula: C8H9NO4S
  • CAS registry number: 105764-07-6
  • Capacity: 25 mg
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Tamsulosin Impurity F

  • Catalog number: RST01962
  • Status: BackOrdered
  • Molecular formula: C10H15NO2
  • CAS registry number: 6781-17-5
  • Capacity: 50 mg
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Tamsulosin Impurity F HCl

  • Catalog number: RST01963
  • Status: BackOrdered
  • Molecular formula: C10H15NO2:HCl
  • CAS registry number: 1051368-80-9
  • Capacity: 25 mg
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Tamsulosin Impurity I

  • Catalog number: RST01965
  • Status: BackOrdered
  • Molecular formula: C10H13BrO2
  • CAS registry number: (3259-03-8)
  • Capacity: 25 mg
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Tamsulosin Amine

  • Catalog number: RST01968
  • Status: BackOrdered
  • Molecular formula: C10H16N2O3S
  • CAS registry number: 112101-81-2
  • Capacity: 25 mg
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Tazarotene Related Compound B

  • Catalog number: RST02313
  • Status: BackOrdered
  • Molecular formula: C8H8ClNO2
  • CAS registry number: 49608-01-7
  • Capacity: 30 mg
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Telmisartan Related Compound A

  • Catalog number: RST01976
  • Status: BackOrdered
  • Molecular formula: C19H20N4.H2O
  • CAS registry number: 1282554-35-1
  • Capacity: 20 mg
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Telmisartan tert-Butyl Ester

  • Catalog number: RST01978
  • Status: BackOrdered
  • Molecular formula: C37H38N4O2
  • CAS registry number: 144702-26-1
  • Capacity: 25 mg
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Telmisartan Impurity G

  • Catalog number: RST01979
  • Status: BackOrdered
  • Molecular formula: C33H29N5
  • CAS registry number: 144702-27-2
  • Capacity: 25 mg
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Telmisartan Impurity I (Telmisartan Methyl Ester)

  • Catalog number: RST01980
  • Status: BackOrdered
  • Molecular formula: C34H32N4O2
  • CAS registry number: 528560-93-2
  • Capacity: 25 mg
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Tenofovir Disoproxil Related Compound G

  • Catalog number: RST01985
  • Status: BackOrdered
  • Molecular formula: C17H28N5O7P.C4H4O4
  • CAS registry number: 1422284-15-8
  • Capacity: 15 mg
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Tenofovir Soproxil

  • Catalog number: RST01988
  • Status: BackOrdered
  • Molecular formula: C14H22N5O7P
  • CAS registry number: 211364-69-1
  • Capacity: 25 mg
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Tadalafil Impurity B

  • Catalog number: RST01951
  • Status: BackOrdered
  • Molecular formula: C22H19N3O4
  • CAS registry number: 629652-72-8
  • Capacity: 25 mg
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Tadalafil Impurity A

  • Catalog number: RST01950
  • Status: BackOrdered
  • Molecular formula: C22H19N3O4
  • CAS registry number: 171596-27-3
  • Capacity: 25 mg
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Tropicamide Related Compound B

  • Catalog number: RST02329
  • Status: In stock
  • Molecular formula: C17H18N2O
  • CAS registry number: 57322-50-6
  • Capacity: 50 mg
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Ticlopidine Pyridinium Bromide Analog

  • Catalog number: RSC00548
  • Status: BackOrdered
  • Molecular formula: C14H13ClNS. Br
  • CAS registry number: 2418591-13-4
  • Capacity: 25 mg
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Ticlopidine Pyridinium Analog

  • Catalog number: RSC00547
  • Status: BackOrdered
  • Molecular formula: C14H11ClNS. Cl
  • CAS registry number: 53885-64-6
  • Capacity: 25 mg
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Tetrahydrothienopyridine Hydrochloride

  • Catalog number: RSC00546
  • Status: BackOrdered
  • Molecular formula: C7H9NS. HCl
  • CAS registry number: 28783-41-7
  • Capacity: 25 mg
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Theophylline-Ethylenediamine Impurity B

  • Catalog number: RSA00077
  • Status: BackOrdered
  • Molecular formula: C6H6N4O2
  • CAS registry number: 1076-22-8
  • Capacity: 25 mg
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Tropicamide Related Compound D

  • Catalog number: RST02331
  • Status: In stock
  • Molecular formula: C8H8O2
  • CAS registry number: 103-82-2
  • Capacity: 15 mg
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Tropicamide Related Compound C

  • Catalog number: RST02330
  • Status: In stock
  • Molecular formula: C9H10O3
  • CAS registry number: 552-63-6
  • Capacity: 25 mg
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Tropicamide Related Compound A

  • Catalog number: RST02328
  • Status: In stock
  • Molecular formula: C8H12N2
  • CAS registry number: 33403-97-3
  • Capacity: 100 mg
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Tenofovir Disoproxil Related Compound B

  • Catalog number: RST01984
  • Status: BackOrdered
  • Molecular formula: C8H9N5
  • CAS registry number: 1446486-33-4
  • Capacity: 10 mg
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Tenofovir Disoproxil Related Compound A

  • Catalog number: RST01983
  • Status: BackOrdered
  • Molecular formula: C19H30N5O10P.C4H4O4
  • CAS registry number: 1432630-26-6
  • Capacity: 10 mg
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Tranexamic acid impurity F

  • Catalog number: RST02326
  • Status: BackOrdered
  • Molecular formula: C9H15NO3
  • CAS registry number: 1599413-49-6
  • Capacity: 10 mg
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Tranexamic acid impurity E

  • Catalog number: RST02325
  • Status: BackOrdered
  • Molecular formula: C16H28N2O3
  • CAS registry number: 82755-59-7
  • Capacity: 10 mg
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Tranexamic acid impurity D

  • Catalog number: RST02324
  • Status: BackOrdered
  • Molecular formula: C8H9NO2
  • CAS registry number: 56-91-7
  • Capacity: 15 mg
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Tinidazole Related Compound A

  • Catalog number: RST02315
  • Status: BackOrdered
  • Molecular formula: C4H5N3O2
  • CAS registry number: 696-23-1
  • Capacity: 100 mg
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Terbinafine Related Compound D

  • Catalog number: RST01997
  • Status: BackOrdered
  • Molecular formula: C22H27N.ClH
  • CAS registry number: 877265-33-3
  • Capacity: 25 mg
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Terbinafine Related Compound C

  • Catalog number: RST01996
  • Status: BackOrdered
  • Molecular formula: C21H25N.ClH
  • CAS registry number: 877265-30-0
  • Capacity: 25 mg
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Terbinafine Related Compound B

  • Catalog number: RST01995
  • Status: BackOrdered
  • Molecular formula: C21H25N.ClH
  • CAS registry number: 176168-78-8
  • Capacity: 25 mg
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Terbinafin Related Compound A

  • Catalog number: RST01994
  • Status: BackOrdered
  • Molecular formula: C12H13N.ClH
  • CAS registry number: 65473-13-4
  • Capacity: 25 mg
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Ticagrelor Related Compound B

  • Catalog number: RST02014
  • Status: BackOrdered
  • Molecular formula: C23D7H21F2N6O4S
  • CAS registry number: 1788033-05-5
  • Capacity: 25 mg
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