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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

Acetazolamide EP Impurity E chemical structure

Acetazolamide EP Impurity E

CAS: 827026-60-8
Formula: C₄H₅N₃O₄S₂
MW: 223.2 g/mol

VQ-020723

Reference Standard

Acetazolamide EP Impurity F chemical structure

Acetazolamide EP Impurity F

CAS: 80495-47-2
Formula: C₈H₉N₇O₆S₄
MW: 427.5 g/mol

VQ-020724

Reference Standard

Acetazolamide-d3 chemical structure

Acetazolamide-d3

CAS: 1189904-01-5
Formula: C₄H₆N₄O₃S₂
MW: 225.3 g/mol

VQ-034931

Reference Standard

Acetic 2-acetoxybenzoic anhydride chemical structure

Acetic 2-acetoxybenzoic anhydride

CAS: 18698-59-4
Formula: C₁₁H₁₀O₅
MW: 222.19 g/mol

VQ-035590

Reference Standard

Acetic Anhydride-13C4,d6 chemical structure

Acetic Anhydride-13C4,d6

CAS: 285977-77-7
Formula: C₄H₆O₃
MW: 112.1 g/mol

VQ-052166

Reference Standard

Acetic-1,2-13C2 acid, 2,2-dichloro-, sodium salt chemical structure

Acetic-1,2-13C2 acid, 2,2-dichloro-, sodium salt

CAS: 1173022-90-6
Formula: C₂HCl₂NaO₂
MW: 152.91 g/mol

VQ-052455

Reference Standard

Acetochlor chemical structure

CAS: 34256-82-1
Formula: C₁₄H₂₀ClNO₂
MW: 269.77 g/mol

VQ-045181

Reference Standard

Acetochlor ESA sodium salt chemical structure

Acetochlor ESA sodium salt

CAS: 947601-84-5
Formula: C₁₄H₂₀NNaO₅S
MW: 337.37 g/mol

VQ-039736

Reference Standard

Acetochlor OA chemical structure

CAS: 194992-44-4
Formula: C₁₄H₁₉NO₄
MW: 265.3 g/mol

VQ-039737

Reference Standard

Acetoguanide chemical structure

CAS: 16352-06-0
Formula: C₄H₆N₄O
MW: 126.12 g/mol

VQ-030095

Reference Standard

Acetomenaphthone chemical structure

Acetomenaphthone

CAS: 573-20-6
Formula: C₁₅H₁₄O₄
MW: 258.27 g/mol

VQ-035587

Reference Standard

Acetone phenylhydrazone chemical structure

Acetone phenylhydrazone

CAS: 103-02-6
Formula: C₉H₁₂N₂
MW: 148.2 g/mol

VQ-033761

Reference Standard

Acetone semicarbazone chemical structure

Acetone semicarbazone

CAS: 110-20-3
Formula: C₄H₉N₃O
MW: 115.13 g/mol

VQ-032776

Reference Standard

Acetone-d6 chemical structure

CAS: 666-52-4
Formula: C₃H₆O
MW: 64.12 g/mol

VQ-041139

Reference Standard

Acetonoxime chemical structure

CAS: 127-06-0
Formula: C₃H₇NO
MW: 73.09 g/mol

VQ-032377

Reference Standard

Acetophenazine chemical structure

CAS: 2751-68-0
Formula: C₂₃H₂₉N₃O₂S
MW: 411.6 g/mol

VQ-047309

Reference Standard

Acetophenone-d8 chemical structure

Acetophenone-d8

CAS: 19547-00-3
Formula: C₈H₈O
MW: 128.2 g/mol

VQ-034932

Reference Standard

Acetoside chemical structure

CAS: 61276-17-3
Formula: C₂₉H₃₆O₁₅
MW: 624.6 g/mol

VQ-039148

Reference Standard

Acetovanillone D3 chemical structure

Acetovanillone D3

CAS: 80404-23-5
Formula: C₉H₁₀O₃
MW: 169.19 g/mol

VQ-034940

Reference Standard

Acetoxybutyl Aminopurine chemical structure

Acetoxybutyl Aminopurine

CAS: 183475-21-0
Formula: C₁₁H₁₅N₅O₃
MW: 265.27 g/mol

VQ-037191

Reference Standard

Acetoxyvalerenic Acid chemical structure

Acetoxyvalerenic Acid

CAS: 84638-55-1
Formula: C₁₇H₂₄O₄
MW: 292.4 g/mol

VQ-034520

Reference Standard

Acetyl 4-Chloro Benzhydryl Piperazine

Acetyl 4-Chloro Benzhydryl Piperazine

CAS: 802859-64-9
Formula: C₁₉H₂₁ClN₂O
MW: 328.84 g/mol

VQ-035295

Reference Standard

Acetyl Clozapine chemical structure

Acetyl Clozapine

CAS: 1025951-76-1
Formula: C₂₀H₂₁ClN₄O
MW: 368.9 g/mol

VQ-035231

Reference Standard

Acetyl Coenzyme A Trisodium Salt chemical structure

Acetyl Coenzyme A Trisodium Salt

CAS: 102029-73-2
Formula: C₂₃H₃₈N₇NaO₁₇P₃S
MW: 832.6 g/mol

VQ-051837

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