Pharmaceutical analytical standards

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

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ImpurityLevels of characterisation

ImpurityLevels of characterisation

ImpurityLevels of characterisation

Cat. No.: P-S041-106
Formula: C₁₉H₂₆N₆O₄S
Family: Sildenafil
Synonyms: N-(2-Aminoethyl)-4-ethoxy-3-(1-methyl-7-oxo-3-propyl-4H-pyrazolo[4,5-d]pyrimidin-5-yl)benzenesulfonamide

ImpurityLevels of characterisation

Cat. No.: P-S041-108
Formula: C₁₇H₂₂N₄O₆S
Family: Sildenafil
Synonyms: 3-[(5-Carbamoyl-1-methyl-3-propylpyrazol-4-yl)carbamoyl]-4-ethoxybenzenesulfonic acid

ImpurityLevels of characterisation

ImpurityLevels of characterisation

ImpurityLevels of characterisation

ImpurityLevels of characterisation

Cat. No.: P-S041-112
Formula: C₂₁H₂₆N₆OS₂
Family: Sildenafil
Synonyms: 5-[2-Hydroxy-5-(4-methylpiperazine-1-carbothioyl)phenyl]-1-methyl-3-propyl-4H-pyrazolo[4,5-d]pyrimidine-7-thione

ImpurityLevels of characterisation

Cat. No.: P-S041-115
Formula: C₂₄H₃₂N₆O₂S
Family: Sildenafil
Synonyms: 5-[5-[(3S,5R)-3,5-Dimethylpiperazine-1-carbothioyl]-2-ethoxyphenyl]-1-methyl-3-propyl-6H-pyrazolo[4,5-d]pyrimidin-7-one

ImpurityLevels of characterisation

Cat. No.: P-S041-116
Formula: C₂₄H₃₂N₆O₄
Family: Sildenafil
Synonyms: 5-[2-Ethoxy-5-[4-(2-hydroxyethyl)piperazine-1-carbonyl]phenyl]-1-methyl-3-propyl-6H-pyrazolo[4,5-d]pyrimidin-7-one

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