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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

(R,Z)-1-(4-(3-Methylthiophen-2-yl)-4-(thiophen-2-yl)but-3-en-1-yl)piperidine-3-carboxylic Acid chemical structure

(R,Z)-1-(4-(3-Methylthiophen-2-yl)-4-(thiophen-2-yl)but-3-en-1-yl)piperidine-3-carboxylic Acid

CAS: 745762-44-1
Formula: C₁₉H₂₃NO₂S₂
MW: 361.5 g/mol

VQ-028851

Reference Standard

(R) Didehydro Tetrabenazine-D6

(R) Didehydro Tetrabenazine-D6

Formula: C₁₉H₁₉D₆NO₃
MW: 321.44 g/mol

In stock

Reference Standard

(R)- 3-[(1-Methyl-2-pyrrolidinyl)methyl]-1H-Indole chemical structure

(R)- 3-[(1-Methyl-2-pyrrolidinyl)methyl]-1H-Indole

CAS: 143322-55-8
Formula: C₁₄H₁₈N₂
MW: 214.31 g/mol

VQ-030422

Reference Standard

(R)-(-)-2-Chloromandelic Acid chemical structure

(R)-(-)-2-Chloromandelic Acid

CAS: 52950-18-2
Formula: C₈H₇ClO₃
MW: 186.59 g/mol

VQ-036415

Reference Standard

(R)-(-)-2-Phenylglycine methyl ester hydrochloride chemical structure

(R)-(-)-2-Phenylglycine methyl ester hydrochloride

CAS: 19883-41-1
Formula: C₉H₁₂ClNO₂
MW: 201.65 g/mol

VQ-029706

Reference Standard

(R)-(-)-2,2-Dimethyl-1,3-Dioxolane-4-Methanol chemical structure

(R)-(-)-2,2-Dimethyl-1,3-Dioxolane-4-Methanol

CAS: 14347-78-5
Formula: C₆H₁₂O₃
MW: 132.16 g/mol

VQ-037541

Reference Standard

(R)-(-)-3-Quinuclidinol Hydrochloride chemical structure

(R)-(-)-3-Quinuclidinol Hydrochloride

CAS: 42437-96-7
Formula: C₇H₁₄ClNO
MW: 163.64 g/mol

VQ-033918

Reference Standard

(R)-(-)-4-Benzyl-3-propionyl-2-oxazolidinone chemical structure

(R)-(-)-4-Benzyl-3-propionyl-2-oxazolidinone

CAS: 131685-53-5
Formula: C₁₃H₁₅NO₃
MW: 233.26 g/mol

VQ-033725

Reference Standard

(R)-(-)-Binaphthyl-2,2'-diyl hydrogen Phosphate chemical structure

(R)-(-)-Binaphthyl-2,2'-diyl hydrogen Phosphate

CAS: 39648-67-4
Formula: C₂₀H₁₂O₄P-
MW: 347.3 g/mol

VQ-044673

Reference Standard

(R)-(-)-Citronellyl bromide chemical structure

(R)-(-)-Citronellyl bromide

CAS: 10340-84-8
Formula: C₁₀H₁₉Br
MW: 219.16 g/mol

VQ-040978

Reference Standard

(R)-(-)-Etodolac chemical structure

(R)-(-)-Etodolac

CAS: 87226-41-3
Formula: C₁₇H₂₁NO₃
MW: 287.35 g/mol

VQ-025660

Reference Standard

(R)-(-)-Ketoprofen chemical structure

(R)-(-)-Ketoprofen

CAS: 56105-81-8
Formula: C₁₆H₁₄O₃
MW: 254.28 g/mol

VQ-031377

Reference Standard

(R)-(-)-Littorine chemical structure

(R)-(-)-Littorine

CAS: 21956-47-8
Formula: C₁₇H₂₃NO₃
MW: 289.4 g/mol

VQ-024428

Reference Standard

(R)-(((1-(6-(Ethylamino)-9H-purin-9-yl)propan-2-yl)oxy)methyl)phosphonic acid chemical structure

(R)-(((1-(6-(Ethylamino)-9H-purin-9-yl)propan-2-yl)oxy)methyl)phosphonic acid

CAS: 1878175-74-6
Formula: C₁₁H₁₈N₅O₄P
MW: 315.27 g/mol

VQ-042417

Reference Standard

(R)-((2-(4-Ethyl-2,3-dioxopiperazine-1-carboxamido)-2-(4-hydroxyphenyl)acetamido)methyl)boronic acid chemical structure

(R)-((2-(4-Ethyl-2,3-dioxopiperazine-1-carboxamido)-2-(4-hydroxyphenyl)acetamido)methyl)boronic acid

CAS: 1204325-21-2
Formula: C₁₆H₂₁BN₄O₇
MW: 392.2 g/mol

VQ-035178

Reference Standard

(R)-((2R,5R)-5-(4-Aminobenzyl)pyrrolidin-2-yl)(phenyl)methanol chemical structure

(R)-((2R,5R)-5-(4-Aminobenzyl)pyrrolidin-2-yl)(phenyl)methanol

CAS: 1426235-11-1
Formula: C₁₈H₂₂N₂O
MW: 282.4 g/mol

VQ-023999

Reference Standard

(R)-((2R,5S)-5-(4-Aminobenzyl)pyrrolidin-2-yl)(phenyl)methanol chemical structure

(R)-((2R,5S)-5-(4-Aminobenzyl)pyrrolidin-2-yl)(phenyl)methanol

CAS: 1295539-30-8
Formula: C₁₈H₂₂N₂O
MW: 282.4 g/mol

VQ-021358

Reference Standard

(R)-(+)-1-(4-Methoxybenzyl)-1,2,3,4,5,6,7,8-octahydroisoquinoline chemical structure

(R)-(+)-1-(4-Methoxybenzyl)-1,2,3,4,5,6,7,8-octahydroisoquinoline

CAS: 30356-08-2
Formula: C₁₇H₂₃NO
MW: 257.37 g/mol

VQ-030161

Reference Standard

(R)-(+)-2,2-Dimethyl-1,3-dioxolane-4-carboxaldehyde chemical structure

(R)-(+)-2,2-Dimethyl-1,3-dioxolane-4-carboxaldehyde

CAS: 15186-48-8
Formula: C₆H₁₀O₃
MW: 130.14 g/mol

VQ-030964

Reference Standard

(R)-(+)-4`-Hydroxyphenyl Carvedilol chemical structure

(R)-(+)-4`-Hydroxyphenyl Carvedilol

CAS: 1217770-29-0
Formula: C₂₄H₂₆N₂O₅
MW: 422.5 g/mol

VQ-036174

Reference Standard

(R)-(+)-5-Methoxylaudanosine chemical structure

(R)-(+)-5-Methoxylaudanosine

CAS: 104758-49-8
Formula: C₂₂H₂₉NO₅
MW: 387.5 g/mol

VQ-038312

Reference Standard

(R)-(+)-Bupivacaine Hydrochloride chemical structure

(R)-(+)-Bupivacaine Hydrochloride

CAS: 27262-46-0
Formula: C₁₈H₂₉ClN₂O
MW: 324.9 g/mol

VQ-029539

Reference Standard

(R)-(+)-Camphor chemical structure

(R)-(+)-Camphor

CAS: 464-49-3
Formula: C₁₀H₁₆O
MW: 152.23 g/mol

VQ-019526

Reference Standard

(R)-(+)-Carvedilol chemical structure

(R)-(+)-Carvedilol

CAS: 95093-99-5
Formula: C₂₄H₂₆N₂O₄
MW: 406.5 g/mol

VQ-022036

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