Skip to content

Product division

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

Atropine EP Impurity B chemical structure

Atropine EP Impurity B

CAS: 16839-98-8
Formula: C₁₆H₂₁NO₃
MW: 275.34 g/mol

VQ-024429

Reference Standard

Atropine EP impurity B hydrochloride chemical structure

Atropine EP impurity B hydrochloride

CAS: 75559-01-2
Formula: C₁₆H₂₂ClNO₃
MW: 311.8 g/mol

VQ-035853

Reference Standard

Atropine EP Impurity E chemical structure

Atropine EP Impurity E

CAS: 949092-65-3
Formula: C₁₇H₂₃NO₄
MW: 305.4 g/mol

VQ-024431

Reference Standard

Atropine Impurity 17 chemical structure

Atropine Impurity 17

CAS: 17488-50-5
Formula: C₁₇H₂₃NO₄
MW: 305.4 g/mol

VQ-035859

Reference Standard

Atropine Impurity 2 chemical structure

Atropine Impurity 2

CAS: 4132-71-2
Formula: C₁₁H₁₆O₂
MW: 180.24 g/mol

VQ-047485

Reference Standard

Atropine Impurity 3 chemical structure

Atropine Impurity 3

CAS: 73109-76-9
Formula: C₁₁H₁₆O₂
MW: 180.24 g/mol

VQ-047486

Reference Standard

Atropine Impurity 30 chemical structure

Atropine Impurity 30

CAS: 78215-11-9
Formula: C₁₇H₂₃NO₄
MW: 305.4 g/mol

VQ-047488

Reference Standard

Atropine Impurity 4 chemical structure

Atropine Impurity 4

CAS: 4132-76-7
Formula: C₁₁H₁₆O₂
MW: 180.24 g/mol

VQ-047487

Reference Standard

Atropine Methyl Bromide chemical structure

Atropine Methyl Bromide

CAS: 2870-71-5
Formula: C₁₈H₂₆BrNO₃
MW: 384.3 g/mol

VQ-035852

Reference Standard

Atropine N-Oxide Hydrochloride chemical structure

Atropine N-Oxide Hydrochloride

CAS: 4574-60-1
Formula: C₁₇H₂₄ClNO₄
MW: 341.8 g/mol

VQ-029283

Reference Standard

Atropine Sulphate chemical structure

Atropine Sulphate

CAS: 55-48-1
Formula: C₃₄H₄₈N₂O₁₀S
MW: 676.8 g/mol

VQ-029284

Reference Standard

Aucubin chemical structure

CAS: 479-98-1
Formula: C₁₅H₂₂O₉
MW: 346.33 g/mol

VQ-035860

Reference Standard

Auristatin E chemical structure

CAS: 160800-57-7
Formula: C₄₀H₆₉N₅O₇
MW: 732 g/mol

VQ-035861

Reference Standard

Auristatin F chemical structure

CAS: 163768-50-1
Formula: C₄₀H₆₇N₅O₈
MW: 746 g/mol

VQ-045131

Reference Standard

Avacopan chemical structure

CAS: 1346623-17-3
Formula: C₃₃H₃₅F₄N₃O₂
MW: 581.6 g/mol

VQ-029287

Reference Standard

Avacopan metabolite M1 chemical structure

Avacopan metabolite M1

CAS: 1346623-14-0
Formula: C₃₃H₃₅F₄N₃O₃
MW: 597.6 g/mol

VQ-035862

Reference Standard

Avanafi Thiomethyl Analog chemical structure

Avanafi Thiomethyl Analog

CAS: 1364671-62-4
Formula: C₁₉H₁₉ClN₆O₂S
MW: 430.9 g/mol

VQ-043059

Reference Standard

Avanafil chemical structure

CAS: 330784-47-9
Formula: C₂₃H₂₆ClN₇O₃
MW: 483.9 g/mol

VQ-021681

Reference Standard

Avanafil Acid Impurity(R Isomer) chemical structure

Avanafil Acid Impurity(R Isomer)

CAS: 1638497-25-2
Formula: C₁₈H₂₁ClN₄O₄
MW: 392.8 g/mol

VQ-029293

Reference Standard

Avanafil Amide Analog chemical structure

Avanafil Amide Analog

CAS: 372117-54-9
Formula: C₁₈H₂₂ClN₅O₃
MW: 391.9 g/mol

VQ-034790

Reference Standard

Avanafil Deschloro impurity chemical structure

Avanafil Deschloro impurity

CAS: 330784-50-4
Formula: C₂₃H₂₇N₇O₃
MW: 449.5 g/mol

VQ-021682

Reference Standard

Avanafil diamine impurity

Avanafil diamine impurity

CAS: 1643811-29-3
Formula: C₂₆H₂₅Cl₂N₇O₃
MW: 554.43 g/mol

VQ-021683

Reference Standard

Avanafil Dichloro Impurity

Avanafil Dichloro Impurity

CAS: 2520113-66-8
Formula: C₂₃H₂₅Cl₂N₇O₃
MW: 518.4 g/mol

VQ-024437

Reference Standard

Avanafil Impurity 9 chemical structure

Avanafil Impurity 9

CAS: 1452128-53-8
Formula: C₁₈H₁₇ClN₆O₃
MW: 400.8 g/mol

VQ-043058

Need a price, a spec or a custom compound?

Send us your list — product names or CAS numbers, grade, quantity and destination. Our team replies with a formal quotation, COA and lead time.

Request a quote Contact sales