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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

(S)-O-Desmethyl Rabeprazole Impurity

(S)-O-Desmethyl Rabeprazole Impurity

CAS: 179952-05-7
Formula: C₁₇H₁₉N₃O₃S
MW: 345.4 g/mol

VQ-041809

Reference Standard

(S)-O-Desmethyl-Venlafaxine-D6 chemical structure

(S)-O-Desmethyl-Venlafaxine-D6

CAS: 1062609-99-7
Formula: C₁₆H₂₅NO₂
MW: 269.41 g/mol

VQ-042854

Reference Standard

(S)-Olodaterol chemical structure

CAS: 868049-50-7
Formula: C₂₁H₂₆N₂O₅
MW: 386.4 g/mol

VQ-021286

Reference Standard

(S)-Oteseconazole chemical structure

(S)-Oteseconazole

CAS: 1446515-60-1
Formula: C₂₃H₁₆F₇N₅O₂
MW: 527.4 g/mol

VQ-045484

Reference Standard

(S)-Phenethyl 2-hydroxypropanoate chemical structure

(S)-Phenethyl 2-hydroxypropanoate

CAS: 1928712-34-8
Formula: C₁₁H₁₄O₃
MW: 194.23 g/mol

VQ-040971

Reference Standard

(S)-Phenylephrine Hydrochloride chemical structure

(S)-Phenylephrine Hydrochloride

CAS: 939-38-8
Formula: C₉H₁₄ClNO₂
MW: 203.66 g/mol

VQ-027938

Reference Standard

(S)-Pomalidomide chemical structure

(S)-Pomalidomide

CAS: 202271-89-4
Formula: C₁₃H₁₁N₃O₄
MW: 273.24 g/mol

VQ-027554

Reference Standard

(S)-Praziquantel chemical structure

(S)-Praziquantel

CAS: 57452-97-8
Formula: C₁₉H₂₄N₂O₂
MW: 312.4 g/mol

VQ-041605

Reference Standard

(S)-Propafenone chemical structure

(S)-Propafenone

CAS: 107381-32-8
Formula: C₂₁H₂₇NO₃
MW: 341.4 g/mol

VQ-041712

Reference Standard

(S)-Propane-1,2-diamine dihydrochloride chemical structure

(S)-Propane-1,2-diamine dihydrochloride

CAS: 19777-66-3
Formula: C₃H₁₂Cl₂N₂
MW: 147.04 g/mol

VQ-048211

Reference Standard

(S)-Propranolol-D7 Hydrochloride chemical structure

(S)-Propranolol-D7 Hydrochloride

CAS: 1346617-12-6
Formula: C₁₆H₂₂ClNO₂
MW: 302.85 g/mol

VQ-041740

Reference Standard

(S)-Pyrrolidine-2-carbonitrile chemical structure

(S)-Pyrrolidine-2-carbonitrile

CAS: 204387-53-1
Formula: C₅H₈N₂
MW: 96.13 g/mol

VQ-042893

Reference Standard

(S)-Rabeprazole Sodium Salt chemical structure

(S)-Rabeprazole Sodium Salt

CAS: 171440-19-0
Formula: C₁₈H₂₀N₃NaO₃S
MW: 381.4 g/mol

VQ-043911

Reference Standard

(S)-Rasagiline chemical structure

CAS: 185517-74-2
Formula: C₁₂H₁₃N
MW: 171.24 g/mol

VQ-004282

Reference Standard

(S)-Rasagiline Mesylate

(S)-Rasagiline Mesylate

CAS: 202464-89-9
Formula: C₁₂H₁₃N.C₂H₆O₃S
MW: 281.37 g/mol

In stock

Reference Standard

(S)-Rasagiline Mesylate chemical structure

(S)-Rasagiline Mesylate

CAS: 202464-88-8
Formula: C₁₃H₁₇NO₃S
MW: 267.35 g/mol

VQ-033465

Reference Standard

(S)-Rotigotine chemical structure

CAS: 99755-59-6
Formula: C₁₉H₂₅NOS
MW: 315.5 g/mol

VQ-004284

Reference Standard

(S)-Ruxolitinib Phosphate chemical structure

(S)-Ruxolitinib Phosphate

CAS: 2703484-89-1
Formula: C₁₇H₂₁N₆O₄P
MW: 404.4 g/mol

VQ-027789

Reference Standard

(S)-S-(3-Chloro-2-methyl-3-oxopropyl) ethanethioate chemical structure

(S)-S-(3-Chloro-2-methyl-3-oxopropyl) ethanethioate

CAS: 69570-39-4
Formula: C₆H₉ClO₂S
MW: 180.65 g/mol

VQ-024761

Reference Standard

(S)-Salbutamol Hydrochloride chemical structure

(S)-Salbutamol Hydrochloride

CAS: 50293-91-9
Formula: C₁₃H₂₂ClNO₃
MW: 275.77 g/mol

VQ-027975

Reference Standard

(S)-Salbutamol Methyl Ester Impurity

(S)-Salbutamol Methyl Ester Impurity

CAS: 165882-31-5
Formula: C₁₄H₂₁NO₄
MW: 267.33 g/mol

VQ-043819

Reference Standard

(S)-Sec-Butyl ((perfluorophenoxy)(phenoxy)phosphoryl)-L-alaninate

(S)-Sec-Butyl ((perfluorophenoxy)(phenoxy)phosphoryl)-L-alaninate

CAS: 1673560-27-4
Formula: C₁₉H₁₉F₅NO₅P
MW: 467.3 g/mol

VQ-044586

Reference Standard

(S)-Sitagliptin N-Boc-Acid Impurity chemical structure

(S)-Sitagliptin N-Boc-Acid Impurity

CAS: 922178-94-7
Formula: C₁₅H₁₈F₃NO₄
MW: 333.3 g/mol

VQ-028056

Reference Standard

(S)-Stiripentol chemical structure

(S)-Stiripentol

CAS: 144017-66-3
Formula: C₁₄H₁₈O₃
MW: 234.29 g/mol

VQ-042273

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