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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

Ethyl(5Z,8Z,11Z,14Z,17Z)-nonadeca-5,8,11,14,17-pentaenoate chemical structure

Ethyl(5Z,8Z,11Z,14Z,17Z)-nonadeca-5,8,11,14,17-pentaenoate

CAS: 2347415-07-8
Formula: C₂₁H₃₂O₂
MW: 316.5 g/mol

VQ-037649

Reference Standard

Ethyl(S)-2-(3-((2-isopropylthiazol-4-yl)methyl)-3-methylureido)-4-morpholinobutanoate oxalate chemical structure

Ethyl(S)-2-(3-((2-isopropylthiazol-4-yl)methyl)-3-methylureido)-4-morpholinobutanoate oxalate

CAS: 1247119-35-2
Formula: C₁₉H₃₂N₄O₄S
MW: 412.5 g/mol

VQ-029916

Reference Standard

Ethyl2-Chloro-3-oxopropanoate chemical structure

Ethyl2-Chloro-3-oxopropanoate

CAS: 33142-21-1
Formula: C₅H₇ClO₃
MW: 150.56 g/mol

VQ-048421

Reference Standard

Ethylene glycol monotosylate chemical structure

Ethylene glycol monotosylate

CAS: 42772-85-0
Formula: C₉H₁₂O₄S
MW: 216.26 g/mol

VQ-027160

Reference Standard

Ethylene Oxide chemical structure

CAS: 75-21-8
Formula: C₂H₄O
MW: 44.05 g/mol

VQ-049487

Reference Standard

Ethylene Terephthalate Cyclic Trimer chemical structure

Ethylene Terephthalate Cyclic Trimer

CAS: 7441-32-9
Formula: C₃₀H₂₄O₁₂
MW: 576.5 g/mol

VQ-027069

Reference Standard

Ethylene-d4 Glycol chemical structure

Ethylene-d4 Glycol

CAS: 2219-51-4
Formula: C₂H₆O₂
MW: 66.09 g/mol

VQ-041229

Reference Standard

Ethylene-D4-diamine chemical structure

Ethylene-D4-diamine

CAS: 37164-19-5
Formula: C₂H₈N₂
MW: 64.12 g/mol

VQ-041132

Reference Standard

Ethylene-d4-diamine dihydrochloride chemical structure

Ethylene-d4-diamine dihydrochloride

CAS: 34334-71-9
Formula: C₂H₁₀Cl₂N₂
MW: 137.04 g/mol

VQ-041191

Reference Standard

Ethylenediaminetetraacetic d12 Acid chemical structure

Ethylenediaminetetraacetic d12 Acid

CAS: 203806-08-0
Formula: C₁₀H₁₆N₂O₈
MW: 304.32 g/mol

VQ-052468

Reference Standard

Ethylenediaminetriacetic acid chemical structure

Ethylenediaminetriacetic acid

CAS: 688-57-3
Formula: C₈H₁₄N₂O₆
MW: 234.21 g/mol

VQ-039693

Reference Standard

Ethylhexyl Triazone chemical structure

Ethylhexyl Triazone

CAS: 88122-99-0
Formula: C₄₈H₆₆N₆O₆
MW: 823.1 g/mol

VQ-030610

Reference Standard

Ethylhexyl Triazone USP Related Compound B chemical structure

Ethylhexyl Triazone USP Related Compound B

CAS: 1469870-11-8
Formula: C₄₀H₅₀N₆O₆
MW: 710.9 g/mol

VQ-030611

Reference Standard

Ethylmetrienone chemical structure

Ethylmetrienone

CAS: 848-04-4
Formula: C₂₀H₂₆O₂
MW: 298.4 g/mol

VQ-044913

Reference Standard

Ethynodiol Diacetate chemical structure

Ethynodiol Diacetate

CAS: 297-76-7
Formula: C₂₄H₃₂O₄
MW: 384.5 g/mol

VQ-032208

Reference Standard

Ethynyl Estradiol 17-Acetate chemical structure

Ethynyl Estradiol 17-Acetate

CAS: 21221-29-4
Formula: C₂₂H₂₆O₃
MW: 338.4 g/mol

VQ-043160

Reference Standard

Ethynyl Estradiol 3-Acetate chemical structure

Ethynyl Estradiol 3-Acetate

CAS: 5779-47-5
Formula: C₂₂H₂₆O₃
MW: 338.4 g/mol

VQ-043159

Reference Standard

Ethynyl Estradiol 3-beta-D-Glucuronide chemical structure

Ethynyl Estradiol 3-beta-D-Glucuronide

CAS: 60134-76-1
Formula: C₂₆H₃₂O₈
MW: 472.5 g/mol

VQ-030602

Reference Standard

Ethynyl Estradiol 3-Sulfate Sodium Salt chemical structure

Ethynyl Estradiol 3-Sulfate Sodium Salt

CAS: 724762-79-2
Formula: C₂₀H₂₃NaO₅S
MW: 398.4 g/mol

VQ-030603

Reference Standard

Ethynyl Estradiol Diacetate chemical structure

Ethynyl Estradiol Diacetate

CAS: 13258-68-9
Formula: C₂₄H₂₈O₄
MW: 380.5 g/mol

VQ-043161

Reference Standard

Etidronate Disodium chemical structure

Etidronate Disodium

CAS: 7414-83-7
Formula: C₂H₆Na₂O₇P₂
MW: 249.99 g/mol

VQ-037142

Reference Standard

Etidronic Acid chemical structure

CAS: 2809-21-4
Formula: C₂H₈O₇P₂
MW: 206.03 g/mol

VQ-039628

Reference Standard

Etifoxine chemical structure

CAS: 21715-46-8
Formula: C₁₇H₁₇ClN₂O
MW: 300.8 g/mol

VQ-030616

Reference Standard

Etifoxine D3 chemical structure

CAS: 1246815-89-3
Formula: C₁₇H₁₇ClN₂O
MW: 303.8 g/mol

VQ-048305

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