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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

Bis(2-propylheptyl) Phthalate chemical structure

Bis(2-propylheptyl) Phthalate

CAS: 53306-54-0
Formula: C₂₈H₄₆O₄
MW: 446.7 g/mol

VQ-039391

Reference Standard

Bis(2,3-dibromopropoxy)tetrabromobisphenol A chemical structure

Bis(2,3-dibromopropoxy)tetrabromobisphenol A

CAS: 21850-44-2
Formula: C₂₁H₂₀Br₈O₂
MW: 943.6 g/mol

VQ-040731

Reference Standard

Bis(3-methylthien-2-yl)methanone chemical structure

Bis(3-methylthien-2-yl)methanone

CAS: 30717-55-6
Formula: C₁₁H₁₀OS₂
MW: 222.3 g/mol

VQ-023886

Reference Standard

Bis(3,4-dimethoxyphenethyl)amine chemical structure

Bis(3,4-dimethoxyphenethyl)amine

CAS: 24997-88-4
Formula: C₂₀H₂₇NO₄
MW: 345.4 g/mol

VQ-030285

Reference Standard

Bis(3,5-di-tert-butylphen-4-ol) Disulfide chemical structure

Bis(3,5-di-tert-butylphen-4-ol) Disulfide

CAS: 6386-58-9
Formula: C₂₈H₄₂O₂S₂
MW: 474.8 g/mol

VQ-040797

Reference Standard

Bis(4-cyanophenyl)methanol chemical structure

Bis(4-cyanophenyl)methanol

CAS: 134521-16-7
Formula: C₁₅H₁₀N₂O
MW: 234.25 g/mol

VQ-031499

Reference Standard

Bis(4-Fluorobenzyl)amine chemical structure

Bis(4-Fluorobenzyl)amine

CAS: 134227-41-1
Formula: C₁₄H₁₃F₂N
MW: 233.26 g/mol

VQ-043256

Reference Standard

Bis(4-hydroxy-1-naphthyl)phenylmethanol chemical structure

Bis(4-hydroxy-1-naphthyl)phenylmethanol

CAS: 6948-88-5
Formula: C₂₇H₂₀O₃
MW: 392.4 g/mol

VQ-040586

Reference Standard

Bis(4-hydroxybenzyl) ether chemical structure

Bis(4-hydroxybenzyl) ether

CAS: 76890-93-2
Formula: C₁₄H₁₄O₃
MW: 230.26 g/mol

VQ-047597

Reference Standard

Bis(4-hydroxybutyl) Terephthalate chemical structure

Bis(4-hydroxybutyl) Terephthalate

CAS: 23358-95-4
Formula: C₁₆H₂₂O₆
MW: 310.34 g/mol

VQ-042444

Reference Standard

Bis(4-Nitrophenyl) Carbonate chemical structure

Bis(4-Nitrophenyl) Carbonate

CAS: 5070-13-3
Formula: C₁₃H₈N₂O₇
MW: 304.21 g/mol

VQ-036983

Reference Standard

Bis(4-nitrophenyl) Sulfone chemical structure

Bis(4-nitrophenyl) Sulfone

CAS: 1156-50-9
Formula: C₁₂H₈N₂O₆S
MW: 308.27 g/mol

VQ-036541

Reference Standard

Bis(7-methyloctyl) cyclohexane-1,2-dicarboxylate chemical structure

Bis(7-methyloctyl) cyclohexane-1,2-dicarboxylate

CAS: 166412-78-8
Formula: C₂₆H₄₈O₄
MW: 424.7 g/mol

VQ-040037

Reference Standard

Bis(diethoxyphosphinyl) disulfide

Bis(diethoxyphosphinyl) disulfide

CAS: 4403-51-4
Formula: C₈H₂₀O₆P₂S₂
MW: 338.32 g/mol

VQ-051871

Reference Standard

Bis(ethylpyridyl) Pioglitazone Analog chemical structure

Bis(ethylpyridyl) Pioglitazone Analog

CAS: 1147527-36-3
Formula: C₂₈H₂₉N₃O₃S
MW: 487.6 g/mol

VQ-041498

Reference Standard

Bis(tert-butoxycarbonyl) lisdexamphetamine chemical structure

Bis(tert-butoxycarbonyl) lisdexamphetamine

CAS: 819871-13-1
Formula: C₂₅H₄₁N₃O₅
MW: 463.6 g/mol

VQ-026492

Reference Standard

Bis(thiazol-5-ylmethyl)carbonate chemical structure

Bis(thiazol-5-ylmethyl)carbonate

CAS: 1370406-84-0
Formula: C₉H₈N₂O₃S₂
MW: 256.3 g/mol

VQ-029918

Reference Standard

Bis[2-hydroxy-3-(3,5-dimethylphenoxy)propyl]amine chemical structure

Bis[2-hydroxy-3-(3,5-dimethylphenoxy)propyl]amine

CAS: 805972-34-3
Formula: C₂₂H₃₁NO₄
MW: 373.5 g/mol

VQ-026629

Reference Standard

Bisabolol Oxide A chemical structure

Bisabolol Oxide A

CAS: 22567-36-8
Formula: C₁₅H₂₆O₂
MW: 238.37 g/mol

VQ-027081

Reference Standard

Bisabolol oxide B chemical structure

Bisabolol oxide B

CAS: 55399-12-7
Formula: C₁₅H₂₆O₂
MW: 238.37 g/mol

VQ-035983

Reference Standard

Bisacodyl chemical structure

CAS: 603-50-9
Formula: C₂₂H₁₉NO₄
MW: 361.4 g/mol

In stock

Reference Standard

Bisacodyl EP Impurity B chemical structure

Bisacodyl EP Impurity B

CAS: 16985-05-0
Formula: C₁₈H₁₅NO₂
MW: 277.3 g/mol

VQ-024602

Reference Standard

Bisacodyl EP Impurity C chemical structure

Bisacodyl EP Impurity C

CAS: 72901-16-7
Formula: C₂₀H₁₇NO₃
MW: 319.4 g/mol

VQ-021845

Reference Standard

Bisacodyl EP Impurity E chemical structure

Bisacodyl EP Impurity E

CAS: 111664-35-8
Formula: C₂₂H₁₉NO₄
MW: 361.4 g/mol

VQ-021844

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