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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.

27,990products

6sub-categories

2,746in stock

COA + SDSwith every lot

API Impurities 14,098 Pharmacopeial Impurities (EP / USP / BP) 4,399 Nitrosamine Impurities 631 Stable Isotope Labelled Standards (Deuterated, 13C, 15N) 1,504 Metabolites & Degradation Products 3,922 API Reference Standards 3,436

Reference Standard

Quinoline yellow FCF Aluminium lake standard chemical structure

Quinoline yellow FCF Aluminium lake standard

CAS: 83-08-9
Formula: C₁₈H₁₁NO₂
MW: 273.3 g/mol

VQ-039654

Reference Standard

Quinotoxine Hydrochloride chemical structure

Quinotoxine Hydrochloride

CAS: 52211-63-9
Formula: C₂₀H₂₅ClN₂O₂
MW: 360.9 g/mol

VQ-041804

Reference Standard

Quizartinib chemical structure

CAS: 950769-58-1
Formula: C₂₉H₃₂N₆O₄S
MW: 560.7 g/mol

VQ-033414

Reference Standard

R 2 tert butyloxycarbonylamino pentane 1 5 diol chemical structure

R 2 tert butyloxycarbonylamino pentane 1 5 diol

CAS: 397246-12-7
Formula: C₁₀H₂₁NO₄
MW: 219.28 g/mol

VQ-038048

Reference Standard

R 4 tert butoxycarbonyl 1 4 oxazepane 2 carboxylic acid chemical structure

R 4 tert butoxycarbonyl 1 4 oxazepane 2 carboxylic acid

CAS: 1273566-86-1
Formula: C₁₁H₁₉NO₅
MW: 245.27 g/mol

VQ-047611

Reference Standard

R Isomer Of Saxagliptin Amide chemical structure

R Isomer Of Saxagliptin Amide

CAS: 1133811-49-0
Formula: C₆H₁₀N₂O
MW: 126.16 g/mol

VQ-044165

Reference Standard

R-(-)-O-Desmethyl Venlafaxine chemical structure

R-(-)-O-Desmethyl Venlafaxine

CAS: 142761-11-3
Formula: C₁₆H₂₅NO₂
MW: 263.37 g/mol

VQ-028666

Reference Standard

R-(-)-O-Desmethyl Venlafaxine-d6 chemical structure

R-(-)-O-Desmethyl Venlafaxine-d6

CAS: 1062609-96-4
Formula: C₁₆H₂₅NO₂
MW: 269.41 g/mol

VQ-034574

Reference Standard

R-(+)-Nicotine chemical structure

CAS: 25162-00-9
Formula: C₁₀H₁₄N₂
MW: 162.23 g/mol

VQ-038613

Reference Standard

R-(+)-Warfarin-d5 chemical structure

R-(+)-Warfarin-d5

CAS: 773005-79-1
Formula: C₁₉H₁₆O₄
MW: 313.4 g/mol

VQ-042965

Reference Standard

R-1,2,3,4-Tetrahydro-3-Isoquinolinecarboxylic Acid chemical structure

R-1,2,3,4-Tetrahydro-3-Isoquinolinecarboxylic Acid

CAS: 103733-65-9
Formula: C₁₀H₁₁NO₂
MW: 177.2 g/mol

VQ-032602

Reference Standard

R-2-Amino Butanamide Hydrochloride chemical structure

R-2-Amino Butanamide Hydrochloride

CAS: 103765-03-3
Formula: C₄H₁₁ClN₂O
MW: 138.59 g/mol

VQ-027169

Reference Standard

R-9-(2-Hydroxy Propyl)adenine chemical structure

R-9-(2-Hydroxy Propyl)adenine

CAS: 14047-28-0
Formula: C₈H₁₁N₅O
MW: 193.21 g/mol

VQ-028258

Reference Standard

R-alpha-Lipoic acid tromethamine salt chemical structure

R-alpha-Lipoic acid tromethamine salt

CAS: 14358-90-8
Formula: C₁₂H₂₅NO₅S₂
MW: 327.5 g/mol

VQ-039470

Reference Standard

R-Amisulpride chemical structure

CAS: 71675-90-6
Formula: C₁₇H₂₇N₃O₄S
MW: 369.5 g/mol

VQ-029117

Reference Standard

R-Amlodipine chemical structure

CAS: 103129-81-3
Formula: C₂₀H₂₅ClN₂O₅
MW: 408.9 g/mol

VQ-024254

Reference Standard

R-Amlodipine-d4 chemical structure

R-Amlodipine-d4

CAS: 1346616-97-4
Formula: C₂₀H₂₅ClN₂O₅
MW: 412.9 g/mol

VQ-035706

Reference Standard

R-Avanafil chemical structure

CAS: 1638497-26-3
Formula: C₂₃H₂₆ClN₇O₃
MW: 483.9 g/mol

VQ-029289

Reference Standard

R-Avapritinib chemical structure

CAS: 1703793-32-1
Formula: C₂₆H₂₇FN₁₀
MW: 498.6 g/mol

VQ-047490

Reference Standard

R-Chlorpheniramine Maleate chemical structure

R-Chlorpheniramine Maleate

CAS: 23095-76-3
Formula: C₂₀H₂₃ClN₂O₄
MW: 390.9 g/mol

VQ-022154

Reference Standard

R-Clopidogrel Carboxylic Acid chemical structure

R-Clopidogrel Carboxylic Acid

CAS: 324757-50-8
Formula: C₁₅H₁₄ClNO₂S
MW: 307.8 g/mol

VQ-025062

Reference Standard

R-Frovatriptan chemical structure

CAS: 158747-02-5
Formula: C₁₄H₁₇N₃O
MW: 243.3 g/mol

VQ-034843

Reference Standard

R-Isomer of LCB5 (Freebase)

R-Isomer of LCB5 (Freebase)

CAS: 141109-23-1
Formula: C₁₅H₁₆ClNO₂S
MW: 309.81 g/mol

VQ-005680

Reference Standard

R-Isomer of LCB5/CLB1 chemical structure

R-Isomer of LCB5/CLB1

CAS: 1258938-54-3
Formula: C₁₅H₁₇Cl₂NO₂S
MW: 346.3 g/mol

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