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Impurities & Reference Standards

Pharmacopoeial and non-pharmacopoeial impurities, metabolites, nitrosamines and working standards with characterisation data for QC and regulatory work.

28,554products

6sub-categories

2,746in stock

COA + SDSwith every lot

API Impurities 14,252 Pharmacopeial Impurities (EP / USP / BP) 4,401 Nitrosamine Impurities 650 Stable Isotope Labelled Standards (Deuterated, 13C, 15N) 1,612 Metabolites & Degradation Products 4,146 API Reference Standards 3,493

Reference Standard

3,5-Dihydroxy-4-isopropylbenzoic acid chemical structure

3,5-Dihydroxy-4-isopropylbenzoic acid

CAS: 1213826-92-6
Formula: C₁₀H₁₂O₄
MW: 196.2 g/mol

VQ-040175

Reference Standard

3,5-Dihydroxy-4-isopropylstilbene chemical structure

3,5-Dihydroxy-4-isopropylstilbene

CAS: 115781-08-3
Formula: C₁₇H₁₈O₂
MW: 254.32 g/mol

VQ-039681

Reference Standard

3,5-Dihydroxy-4-methoxybenzoic acid chemical structure

3,5-Dihydroxy-4-methoxybenzoic acid

CAS: 4319-02-2
Formula: C₈H₈O₅
MW: 184.15 g/mol

VQ-040194

Reference Standard

3,5-Dihydroxybenzaldehyde chemical structure

3,5-Dihydroxybenzaldehyde

CAS: 26153-38-8
Formula: C₇H₆O₃
MW: 138.12 g/mol

VQ-043616

Reference Standard

3,5-Diiodo Thyroaldehyde Methyl Ether chemical structure

3,5-Diiodo Thyroaldehyde Methyl Ether

CAS: 69240-57-9
Formula: C₁₄H₁₀I₂O₃
MW: 480.04 g/mol

VQ-049794

Reference Standard

3,5-Diiodo-4-hydroxybenzaldehyde chemical structure

3,5-Diiodo-4-hydroxybenzaldehyde

CAS: 1948-40-9
Formula: C₇H₄I₂O₂
MW: 373.91 g/mol

VQ-049821

Reference Standard

3,5-Dimethoxy-4-(1-methylethyl)benzaldehyde chemical structure

3,5-Dimethoxy-4-(1-methylethyl)benzaldehyde

CAS: 344396-19-6
Formula: C₁₂H₁₆O₃
MW: 208.25 g/mol

VQ-044171

Reference Standard

3,5-Dimethoxy-4-ethylbenzoic acid chemical structure

3,5-Dimethoxy-4-ethylbenzoic acid

CAS: 55703-68-9
Formula: C₁₁H₁₄O₄
MW: 210.23 g/mol

VQ-049108

Reference Standard

3,5-Dimethyl-1-adamantanol chemical structure

3,5-Dimethyl-1-adamantanol

CAS: 707-37-9
Formula: C₁₂H₂₀O
MW: 180.29 g/mol

VQ-023060

Reference Standard

3,5-Dimethyl-1H-pyrrole-2,4-dicarboxylic acid 2-tert-butyl ester 4-ethyl ester chemical structure

3,5-Dimethyl-1H-pyrrole-2,4-dicarboxylic acid 2-tert-butyl ester 4-ethyl ester

CAS: 86770-31-2
Formula: C₁₄H₂₁NO₄
MW: 267.32 g/mol

VQ-033994

Reference Standard

3,5-Dimethyl-7-nitroadamantan-1-ol chemical structure

3,5-Dimethyl-7-nitroadamantan-1-ol

CAS: 2460757-92-8
Formula: C₁₂H₁₉NO₃
MW: 225.28 g/mol

VQ-021276

Reference Standard

3,5-Dimethylbenzyl cyanide chemical structure

3,5-Dimethylbenzyl cyanide

CAS: 39101-54-7
Formula: C₁₀H₁₁N
MW: 145.2 g/mol

VQ-035733

Reference Standard

3,5-Dimethylpyridine-N-oxide chemical structure

3,5-Dimethylpyridine-N-oxide

CAS: 3718-65-8
Formula: C₇H₉NO
MW: 123.15 g/mol

VQ-039895

Reference Standard

3,5-Dimethylthiophenol chemical structure

3,5-Dimethylthiophenol

CAS: 38360-81-5
Formula: C₈H₁₀S
MW: 138.23 g/mol

VQ-039657

Reference Standard

3,5-Dinitropyridin-4-amine chemical structure

3,5-Dinitropyridin-4-amine

CAS: 31793-29-0
Formula: C₅H₄N₄O₄
MW: 184.11 g/mol

VQ-044551

Reference Standard

3,5-Hydroxy-N-methylprotriptyline chemical structure

3,5-Hydroxy-N-methylprotriptyline

CAS: 30235-47-3
Formula: C₂₀H₂₃NO₂
MW: 309.4 g/mol

VQ-036465

Reference Standard

3,5-Pyridinedicarboxylic acid, 1,4-dihydro-2,6-dimethyl-4-(3-nitrophenyl)-, 3-(2-methoxyethyl)ester chemical structure

3,5-Pyridinedicarboxylic acid, 1,4-dihydro-2,6-dimethyl-4-(3-nitrophenyl)-, 3-(2-methoxyethyl)ester

CAS: 74936-76-8
Formula: C₁₈H₂₀N₂O₇
MW: 376.4 g/mol

VQ-021149

Reference Standard

3,5-Pyridinedisulfonyl dichloride chemical structure

3,5-Pyridinedisulfonyl dichloride

CAS: 13069-02-8
Formula: C₅H₃Cl₂NO₄S₂
MW: 276.1 g/mol

VQ-042938

Reference Standard

3,5,3',5'-Tetraiodo Thyrolactic Acid chemical structure

3,5,3',5'-Tetraiodo Thyrolactic Acid

CAS: 7069-47-8
Formula: C₁₅H₁₀I₄O₅
MW: 777.85 g/mol

VQ-031543

Reference Standard

3,5,6-Tri-O-benzyl-D-glucofuranose chemical structure

3,5,6-Tri-O-benzyl-D-glucofuranose

CAS: 81969-62-2
Formula: C₂₇H₃₀O₆
MW: 450.5 g/mol

VQ-042671

Reference Standard

3,5,6-Trichloro-2-pyridinol-beta-D-Glucuronide chemical structure

3,5,6-Trichloro-2-pyridinol-beta-D-Glucuronide

CAS: 58997-12-9
Formula: C₁₁H₁₀Cl₃NO₇
MW: 374.6 g/mol

VQ-043632

Reference Standard

3,5,6-Trichlorosalicylic Acid chemical structure

3,5,6-Trichlorosalicylic Acid

CAS: 40932-60-3
Formula: C₇H₃Cl₃O₃
MW: 241.5 g/mol

VQ-041280

Reference Standard

3,5Dimethoxy-2,4-bis(1-methylethyl)benzoic acid chemical structure

3,5Dimethoxy-2,4-bis(1-methylethyl)benzoic acid

CAS: 2772354-76-2
Formula: C₁₅H₂₂O₄
MW: 266.33 g/mol

VQ-040058

Reference Standard

3,6-Bis(hydroxymethyl)-2,5-piperazinedione chemical structure

3,6-Bis(hydroxymethyl)-2,5-piperazinedione

CAS: 5625-41-2
Formula: C₆H₁₀N₂O₄
MW: 174.15 g/mol

VQ-029959

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