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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

Amlodipine N-Lactoside chemical structure

Amlodipine N-Lactoside

CAS: 749864-27-5
Formula: C₃₂H₄₅ClN₂O₁₅
MW: 733.2 g/mol

VQ-024253

Reference Standard

Amlodipine N-Lactoside (Mixture of Diastereomers) chemical structure

Amlodipine N-Lactoside (Mixture of Diastereomers)

CAS: 2173291-00-2
Formula: C₃₂H₄₅ClN₂O₁₅
MW: 733.2 g/mol

VQ-021560

Reference Standard

Amlodipine orotate chemical structure

Amlodipine orotate

CAS: 914941-70-1
Formula: C₂₅H₂₉ClN₄O₉
MW: 565 g/mol

VQ-035695

Reference Standard

Amlodipine para-Chloro Impurity chemical structure

Amlodipine para-Chloro Impurity

CAS: 90445-02-6
Formula: C₂₀H₂₅ClN₂O₅
MW: 408.9 g/mol

In stock

Reference Standard

Amlodipine Related Compound (E-Isomer) chemical structure

Amlodipine Related Compound (E-Isomer)

CAS: 400024-08-0
Formula: C₂₃H₂₀ClNO₆
MW: 441.9 g/mol

VQ-004381

Reference Standard

Amlodipine Related Compound K chemical structure

Amlodipine Related Compound K

CAS: 1621516-91-3
Formula: C₁₈H₂₀ClNO₃
MW: 333.8 g/mol

VQ-021564

Reference Standard

Amlodipine WS chemical structure

CAS: 88150-42-9
Formula: C₂₀H₂₅ClN₂O₅
MW: 408.9 g/mol

VQ-007312

Reference Standard

Amlodipine-d4 chemical structure

CAS: 1185246-14-3
Formula: C₂₀H₂₅ClN₂O₅
MW: 412.9 g/mol

VQ-029137

Reference Standard

Amlodipine-d4 Maleic Acid Salt chemical structure

Amlodipine-d4 Maleic Acid Salt

CAS: 1185246-15-4
Formula: C₂₄H₂₉ClN₂O₉
MW: 529 g/mol

VQ-047396

Reference Standard

Ammelide chemical structure

CAS: 645-93-2
Formula: C₃H₄N₄O₂
MW: 128.09 g/mol

VQ-039154

Reference Standard

Ammeline chemical structure

CAS: 645-92-1
Formula: C₃H₅N₅O
MW: 127.11 g/mol

VQ-032468

Reference Standard

Ammonio Methacrylate Copolymer Type A

Ammonio Methacrylate Copolymer Type A

CAS: 33434-24-1
Formula: C₁₉H₃₄ClNO₆
MW: 407.93 g/mol

VQ-043466

Reference Standard

Ammonium 2-hydroxy-4-methylbenzenesulphonate chemical structure

Ammonium 2-hydroxy-4-methylbenzenesulphonate

CAS: 79093-71-3
Formula: C₇H₁₁NO₄S
MW: 205.23 g/mol

VQ-038971

Reference Standard

Ammonium Glycyrrhizate EP Impurity A chemical structure

Ammonium Glycyrrhizate EP Impurity A

CAS: 215720-45-9
Formula: C₄₂H₆₂O₁₇
MW: 838.9 g/mol

VQ-037553

Reference Standard

Ammonium1-(6-methoxy-1H-benzo(d)imidazol-2-yl)-3,5-dimethyl-4-oxo-1,4-dihydropyridine-2-carboxylate chemical structure

Ammonium1-(6-methoxy-1H-benzo(d)imidazol-2-yl)-3,5-dimethyl-4-oxo-1,4-dihydropyridine-2-carboxylate

CAS: 2227107-89-1
Formula: C₁₆H₁₈N₄O₄
MW: 330.34 g/mol

VQ-037090

Reference Standard

Amodiaquine chemical structure

CAS: 86-42-0
Formula: C₂₀H₂₂ClN₃O
MW: 355.9 g/mol

VQ-021565

Reference Standard

Amodiaquine hydrochloride chemical structure

Amodiaquine hydrochloride

CAS: 69-44-3
Formula: C₂₀H₂₈Cl₃N₃O₃
MW: 464.8 g/mol

VQ-047397

Reference Standard

Amodiaquine Impurity A (Mannich Base) chemical structure

Amodiaquine Impurity A (Mannich Base)

CAS: 121-78-8
Formula: C₁₃H₂₀N₂O₂
MW: 236.31 g/mol

In stock

Reference Standard

Amodiaquine N-Oxide chemical structure

Amodiaquine N-Oxide

CAS: 102391-07-1
Formula: C₂₀H₂₂ClN₃O₂
MW: 371.9 g/mol

VQ-045395

Reference Standard

Amodiaquine-d10 chemical structure

Amodiaquine-d10

CAS: 1189449-70-4
Formula: C₂₀H₂₂ClN₃O
MW: 365.9 g/mol

VQ-021567

Reference Standard

Amorolfine EP Impurity B chemical structure

Amorolfine EP Impurity B

CAS: 142347-84-0
Formula: C₂₁H₃₃NO₃
MW: 347.5 g/mol

VQ-021569

Reference Standard

Amorolfine EP Impurity E chemical structure

Amorolfine EP Impurity E

CAS: 2134097-34-8
Formula: C₂₁H₃₅NO
MW: 317.5 g/mol

VQ-024264

Reference Standard

Amorolfine EP Impurity F chemical structure

Amorolfine EP Impurity F

CAS: 106614-66-8
Formula: C₁₄H₂₀O
MW: 204.31 g/mol

VQ-021568

Reference Standard

Amorolfine EP Impurity G chemical structure

Amorolfine EP Impurity G

CAS: 106614-69-1
Formula: C₂₁H₃₃NO₂
MW: 331.5 g/mol

VQ-035711

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