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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

Homopterocarpin chemical structure

Homopterocarpin

CAS: 606-91-7
Formula: C₁₇H₁₆O₄
MW: 284.31 g/mol

VQ-045213

Reference Standard

Homosalate chemical structure

CAS: 118-56-9
Formula: C₁₆H₂₂O₃
MW: 262.34 g/mol

VQ-031069

Reference Standard

Hopantenic Acid chemical structure

Hopantenic Acid

CAS: 18679-90-8
Formula: C₁₀H₁₉NO₅
MW: 233.26 g/mol

VQ-043136

Reference Standard

Hydantoic Acid chemical structure

CAS: 462-60-2
Formula: C₃H₆N₂O₃
MW: 118.09 g/mol

VQ-031070

Reference Standard

Hydralazine 6-Chlorophthalazinone Impurity chemical structure

Hydralazine 6-Chlorophthalazinone Impurity

CAS: 57835-96-8
Formula: C₈H₅ClN₂O
MW: 180.59 g/mol

VQ-037587

Reference Standard

Hydralazine 7-Chloro-1-hydrazinyl Impurity chemical structure

Hydralazine 7-Chloro-1-hydrazinyl Impurity

CAS: 59283-60-2
Formula: C₈H₇ClN₄
MW: 194.62 g/mol

VQ-031074

Reference Standard

Hydralazine Dimer Impurity chemical structure

Hydralazine Dimer Impurity

CAS: 24030-07-7
Formula: C₁₆H₁₂N₆
MW: 288.31 g/mol

VQ-022794

Reference Standard

Hydralazine Hydrochloride chemical structure

Hydralazine Hydrochloride

CAS: 304-20-1
Formula: C₈H₉ClN₄
MW: 196.64 g/mol

VQ-022791

Reference Standard

Hydralazine Hydrochloride EP Impurity A chemical structure

Hydralazine Hydrochloride EP Impurity A

CAS: 300843-36-1
Formula: C₈H₆Cl₂N₂
MW: 201.05 g/mol

VQ-037588

Reference Standard

Hydralazine Impurity A chemical structure

Hydralazine Impurity A

CAS: 5784-45-2
Formula: C₈H₅ClN₂
MW: 164.59 g/mol

In stock

Reference Standard

Hydralazine Methoxy Impurity chemical structure

Hydralazine Methoxy Impurity

CAS: 24953-56-8
Formula: C₉H₈N₂O
MW: 160.17 g/mol

VQ-031071

Reference Standard

Hydralazine Triphthalazine Impurity

Hydralazine Triphthalazine Impurity

CAS: 103429-73-8
Formula: C₂₄H₁₆N₈
MW: 416.44 g/mol

VQ-022795

Reference Standard

Hydralazine-d4 Hydrochloride chemical structure

Hydralazine-d4 Hydrochloride

CAS: 2749234-32-8
Formula: C₈H₉ClN₄
MW: 200.66 g/mol

VQ-037590

Reference Standard

Hydralazine-d5 Hydrochloride

Hydralazine-d5 Hydrochloride

CAS: 2012598-61-5
Formula: C₈H₄D₅ClN₄
MW: 201.67 g/mol

VQ-048577

Reference Standard

Hydrallostane 21-acetate chemical structure

Hydrallostane 21-acetate

CAS: 4004-68-6
Formula: C₂₃H₃₄O₆
MW: 406.5 g/mol

VQ-048583

Reference Standard

Hydrazine,1-(4-chlorophenyl)-1-nitroso chemical structure

Hydrazine,1-(4-chlorophenyl)-1-nitroso

CAS: 58858-73-4
Formula: C₆H₆ClN₃O
MW: 171.58 g/mol

VQ-051575

Reference Standard

Hydrochlorothiazide chemical structure

Hydrochlorothiazide

CAS: 58-93-5
Formula: C₇H₈ClN₃O₄S₂
MW: 297.7 g/mol

In stock

Reference Standard

Hydrochlorothiazide EP Impurity A chemical structure

Hydrochlorothiazide EP Impurity A

CAS: 58-94-6
Formula: C₇H₆ClN₃O₄S₂
MW: 295.7 g/mol

VQ-022149

Reference Standard

Hydrochlorothiazide EP Impurity B chemical structure

Hydrochlorothiazide EP Impurity B

CAS: 121-30-2
Formula: C₆H₈ClN₃O₄S₂
MW: 285.7 g/mol

VQ-021133

Reference Standard

Hydrochlorothiazide EP Impurity C chemical structure

Hydrochlorothiazide EP Impurity C

CAS: 402824-96-8
Formula: C₁₅H₁₆Cl₂N₆O₈S₄
MW: 607.5 g/mol

VQ-022796

Reference Standard

Hydrochlorothiazide Hydroxy Impurity

Hydrochlorothiazide Hydroxy Impurity

CAS: 17277-91-7
Formula: C₆H₇ClN₂O₅S₂
MW: 286.7 g/mol

VQ-044247

Reference Standard

Hydrochlorothiazide Nitrophenyl Impurity chemical structure

Hydrochlorothiazide Nitrophenyl Impurity

CAS: 97-09-6
Formula: C₆H₅ClN₂O₄S
MW: 236.63 g/mol

VQ-026065

Reference Standard

Hydrochlorothiazide-13C,d2 chemical structure

Hydrochlorothiazide-13C,d2

CAS: 1190006-03-1
Formula: C₇H₈ClN₃O₄S₂
MW: 300.7 g/mol

VQ-037592

Reference Standard

Hydrochlorothiazide-13C6 chemical structure

Hydrochlorothiazide-13C6

CAS: 1261396-79-5
Formula: C₇H₈ClN₃O₄S₂
MW: 303.7 g/mol

VQ-026066

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