Pharmaceutical analytical standards

Active ingredients, pharmacopoeial impurities, metabolites, nitrosamines and labelled standards.

Results 4,531-4,540 of 5,812

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Pharmacopoeial impurityLevels of characterisation

Cat. No.: P-Z015-006
CAS: 148665-49-0
Formula: C₂₀H₂₅N₇O₈
Family: Zidovudine
Synonyms: Zidovudine EP Impurity G, Thymidine, 3'-(3-(3-azido-2,3-dideoxy-beta-D-erythro-pentofuranosyl)-3,6-dihydro-5-methyl-2,6-dioxo-1(2H)-pyrimidinyl)-3'-deoxy-

Pharmacopoeial impurityLevels of characterisation

Pharmacopoeial impurityLevels of characterisation

Cat. No.: P-A082-002
CAS: 27511-79-1
Formula: 2C₄H₆N₄O·H₂SO₄
Family: Allopurinol
Synonyms: 3-Amino-4-carboxamidopyrazole hemisulfate, Allopurinol EP Impurity A Hemisulfate

Pharmacopoeial impurityLevels of characterisation

Cat. No.: P-A082-004
CAS: 22407-20-1
Formula: C₅H₆N₄O₂
Family: Allopurinol
Synonyms: 5-Formylamino-1H-pyrazole-4-carboxamide, 5-formamido-1H-pyrazole-4-carboxamide

Pharmacopoeial impurityLevels of characterisation

Cat. No.: P-A082-005
CAS: 1346604-13-4
Formula: C₆H₆N₆O
Family: Allopurinol
Synonyms: 5-(4H-1,2,4-Triazol-4-yl)-1H-pyrazole-4-carboxamide, 5-(1,2,4-triazol-4-yl)-1H-pyrazole-4-carboxamide

Pharmacopoeial impurityLevels of characterisation

Cat. No.: P-A082-006
CAS: 6994-25-8
Formula: C₆H₉N₃O₂
Family: Allopurinol
Synonyms: ethyl 3-amino-1H-pyrazole-4-carboxylate, ethyl 5-amino-1H-pyrazole-4-carboxylate

Pharmacopoeial impurityLevels of characterisation

Cat. No.: P-A082-007
CAS: 31055-19-3
Formula: C₇H₉N₃O₃
Family: Allopurinol
Synonyms: Ethyl 5-(formylamino)-1H-pyrazole-4-carboxylate, ethyl 5-formamido-1H-pyrazole-4-carboxylate

Pharmacopoeial impurityLevels of characterisation

Cat. No.: P-A082-008
CAS: 321571-07-7
Formula: C₁₂H₁₄N₄O₄
Family: Allopurinol
Synonyms: Ethyl-3-(2-carbethoxy-2-cyanoethenyl)amino-1H-pyrazole-4-carboxylate, Allopurinol related compound f (usp-rs)

Pharmacopoeial impurityLevels of characterisation

Pharmacopoeial impurityLevels of characterisation

Cat. No.: P-A152-020
CAS: 70381-75-8
Formula: C₁₂H₁₄BrCl₂N₃O₂
Family: Anagrelide
Synonyms: Anagrelide Related Compound C (as Hydrobromide), Anagrelide USP RC C

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