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Pharmaceutical analytical standards

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

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cis-10,11-Dihydroxy-10,11-dihydrocarbamazepine

APILevels of characterisation

Cat. No.: P-D217-001
CAS: 58955-94-5
Formula: C₁₅H₁₄N₂O₃
Synonyms: Rel-(10R,11S)-10,11-dihydro-10,11-dihydroxy-5H-dibenz(b,f)azepine-5-carboxamide, cis-Carbamazepin-10,11-dihydro-10,11-dihydroxide 100 microg/mL in Acetonitrile

5,6-dihydroxy-1H-indole-2-carboxylic acid

APILevels of characterisation

Cat. No.: P-D796-001
CAS: 4790-08-3
Formula: C₉H₇NO₄
Synonyms: 5,6-Dihydroxyindole-2-Carboxylic Acid, Levodopa Related Compound 2

5,7-Dihydroxy-2-(3-hydroxy-4-methoxyphenyl)-2,3-dihydrochromen-4-one

APILevels of characterisation

Cat. No.: P-H644-001
CAS: 69097-99-0
Formula: C₁₆H₁₄O₆
Synonyms: rac-Hesperetin (Diosmin Impurity G), rac-Hesperetin

1',4'-dihydroxy-2,2'-binaphthyl-1,4-quinone

APILevels of characterisation

Cat. No.: P-D797-001
CAS: 35889-53-3
Formula: C₂₀H₁₂O₄

11beta,20-Dihydroxy-3-oxopregna-1,4-dien-21-oic Acid

APILevels of characterisation

Cat. No.: P-B374-001
CAS: 75448-52-1
Formula: C₂₁H₂₈O₅

5,12-Dihydroxy-6,8,10,14-Eicosatetraenoic Acid

APILevels of characterisation

Cat. No.: P-D803-001
CAS: 73151-67-4
Formula: C₂₀H₃₂O₄
Synonyms: 5,12-Dihydroxyicosa-6,8,10,14-tetraenoic acid

3',4'-dihydroxy[1,1'-Binaphthalene]-3,4-dione

APILevels of characterisation

Cat. No.: P-D806-001
CAS: 60599-29-3
Formula: C₂₀H₁₂O₄

3',4'-Dihydroxyacetophenone

APILevels of characterisation

Cat. No.: P-D808-001
CAS: 1197-09-7
Formula: C₈H₈O₃
Synonyms: 1-(3,4-dihydroxyphenyl)ethanone, Qingxintong

3,5-Dihydroxyaniline

APILevels of characterisation

Cat. No.: P-D809-001
CAS: 20734-67-2
Formula: C₆H₇NO₂
Synonyms: 5-Aminobenzene-1,3-diol, Phloramine

2,3-Dihydroxybenzoic Acid

APILevels of characterisation

Cat. No.: P-D810-001
CAS: 303-38-8
Formula: C₇H₆O₄
Synonyms: Pyrocatechuic acid, o-Pyrocatechuic acid

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