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APIs, pharmacopoeial impurities, metabolites, nitrosamines and labelled standards.

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Ethambutol EP Impurity B Dihydrochloride

Pharmacopoeial impurityLevels of characterisation

Cat. No.: P-E114-003
CAS: 32454-69-6
Formula: C₁₀H₂₄N₂O₂·2HCl
Family: Ethambutol
Synonyms: Rel-(2R,2'S)-2,2'-(ethane-1,2-diylbis(azanediyl))bis(butan-1-ol) dihydrochloride, Ethambutol EP Impurity B (2R,2'S-Ethambutol) DiHCl

Ethambutol EP Impurity C

Pharmacopoeial impurityLevels of characterisation

Cat. No.: P-E114-004
CAS: 134566-79-3
Formula: C₁₀H₂₄N₂O₂·2HCl
Family: Ethambutol
Synonyms: Ethambutol EP Impurity C Dihydrochloride (2R,2R-Ethambutol Dihydrochloride), 2-[2-(1-hydroxybutan-2-ylamino)ethylamino]butan-1-ol

Ethambutol-d4

Isotopically labelledLevels of characterisation

Cat. No.: P-E114-006
CAS: 1129526-19-7
Formula: C₁₀H₂₀D₄N₂O₂
Family: Ethambutol
Synonyms: Ethambutol-d4 Dihydrochloride

Ethambutol-d8

Isotopically labelledLevels of characterisation

Cat. No.: P-E114-007
CAS: 1129526-23-3
Formula: C₁₀H₁₆D₈N₂O₂
Family: Ethambutol

Ethyl 1-acetylcyclobutane-1-carboxylate

ImpurityLevels of characterisation

Cat. No.: P-E461-004
CAS: 126290-87-7
Formula: C₉H₁₄O₃

Ethyl 2-[(2-aminobenzoyl)amino]acetate

ImpurityLevels of characterisation

Cat. No.: P-S052-007
CAS: 5973-34-2
Formula: C₁₁H₁₄N₂O₃
Family: Sivelestat

Ethyl 3-hydroxy-2-nitrosobut-2-enoate

ImpurityLevels of characterisation

Cat. No.: P-E461-005
CAS: 66508-93-8
Formula: C₆H₉NO₄
Synonyms: Ethyl (2Z)-2-(hydroxyimino)-3-oxobutanoate, Ethyl (2E)-2-(hydroxyimino)-3-oxobutanoate

Ethyl Acetoacetate Impurity 1

ImpurityLevels of characterisation

Cat. No.: P-E461-002
CAS: 66340-86-1
Formula: C₇H₁₁NO₄
Synonyms: Ethyl (2Z)-2-(methoxyimino)-3-oxobutanoate, Ethyl syn-2-methoxyiminoacetoacetate

Ethyl Acetoacetate Impurity 2

ImpurityLevels of characterisation

Cat. No.: P-E461-003
CAS: 65872-39-1
Formula: C₇H₁₀BrNO₄
Synonyms: Ethyl (2Z)-4-bromo-2-methoxyimino-3-oxobutanoate, Butanoic acid, 4-bromo-2-(methoxyimino)-3-oxo-, ethyl ester, (Z)-

Ethyl Acetoacetate Impurity 3

ImpurityLevels of characterisation

Cat. No.: P-E461-006
CAS: 135452-67-4
Formula: C₁₂H₁₆O₇
Synonyms: Ethyl 4-(2,2-dimethyl-4,6-dioxo-1,3-dioxan-5-yl)-3-oxobutanoate

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