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

Brimonidine-2,3-dione chemical structure

Brimonidine-2,3-dione

CAS: 182627-95-8
Formula: C₁₁H₁₀BrN₅O₂
MW: 324.13 g/mol

VQ-020986

Reference Standard

Brimonidine-D4 chemical structure

CAS: 1184971-51-4
Formula: C₁₁H₁₀BrN₅
MW: 296.16 g/mol

VQ-029507

Reference Standard

Brinzolamide chemical structure

CAS: 138890-62-7
Formula: C₁₂H₂₁N₃O₅S₃
MW: 383.5 g/mol

VQ-021884

Reference Standard

Brinzolamide D5 chemical structure

Brinzolamide D5

CAS: 1217651-02-9
Formula: C₁₂H₂₁N₃O₅S₃
MW: 388.5 g/mol

VQ-036027

Reference Standard

Brinzolamide Racemc mixture(mixture of S&R isomer) chemical structure

Brinzolamide Racemc mixture(mixture of S&R isomer)

CAS: 138890-50-3
Formula: C₁₂H₂₁N₃O₅S₃
MW: 383.5 g/mol

VQ-036024

Reference Standard

Brivanib chemical structure

CAS: 649735-46-6
Formula: C₁₉H₁₉FN₄O₃
MW: 370.4 g/mol

VQ-043077

Reference Standard

Brivanib Alaninate chemical structure

Brivanib Alaninate

CAS: 649735-63-7
Formula: C₂₂H₂₄FN₅O₄
MW: 441.5 g/mol

VQ-043078

Reference Standard

Brivaracetam chemical structure

CAS: 357336-20-0
Formula: C₁₁H₂₀N₂O₂
MW: 212.29 g/mol

VQ-024646

Reference Standard

Brivaracetam (alfaR, 4R)-Isomer chemical structure

Brivaracetam (alfaR, 4R)-Isomer

CAS: 357337-00-9
Formula: C₁₁H₂₀N₂O₂
MW: 212.29 g/mol

VQ-024649

Reference Standard

Brivaracetam (alfaR,4S)-Isomer chemical structure

Brivaracetam (alfaR,4S)-Isomer

CAS: 357336-99-3
Formula: C₁₁H₂₀N₂O₂
MW: 212.29 g/mol

VQ-024647

Reference Standard

Brivaracetam acid (2R, 4R)-Isomer chemical structure

Brivaracetam acid (2R, 4R)-Isomer

CAS: 2755924-56-0
Formula: C₁₁H₁₉NO₃
MW: 213.27 g/mol

VQ-036028

Reference Standard

Brivaracetam EP Impurity D chemical structure

Brivaracetam EP Impurity D

CAS: 943986-67-2
Formula: C₁₁H₁₉NO₃
MW: 213.27 g/mol

VQ-024650

Reference Standard

Brivaracetam Impurity 25 chemical structure

Brivaracetam Impurity 25

CAS: 357336-90-4
Formula: C₁₁H₁₈N₂O₃
MW: 226.27 g/mol

VQ-047626

Reference Standard

Brivaracetam Impurity 27 chemical structure

Brivaracetam Impurity 27

CAS: 2242963-07-9
Formula: C₁₇H₂₀N₂O₃
MW: 300.35 g/mol

VQ-047625

Reference Standard

Brivaracetam Impurity 55 chemical structure

Brivaracetam Impurity 55

CAS: 2179080-15-8
Formula: C₇H₁₃NO
MW: 127.18 g/mol

VQ-047629

Reference Standard

Brivaracetam Impurity 56 chemical structure

Brivaracetam Impurity 56

CAS: 143868-89-7
Formula: C₁₅H₁₉NO₃
MW: 261.32 g/mol

VQ-047628

Reference Standard

Brivaracetam Impurity 67 chemical structure

Brivaracetam Impurity 67

CAS: 2412-81-9
Formula: C₈H₁₆O₂
MW: 144.21 g/mol

VQ-047630

Reference Standard

Brivaracetam Impurity 72

Brivaracetam Impurity 72

CAS: 2432911-35-6
Formula: C₁₁H₂₂O₃
MW: 202.29 g/mol

VQ-047631

Reference Standard

Brivaracetam Impurity 79

Brivaracetam Impurity 79

CAS: 2752475-08-2
Formula: C₁₀H₁₉BrO₃
MW: 267.2 g/mol

VQ-036034

Reference Standard

Brivaracetam-d7 chemical structure

Brivaracetam-d7

CAS: 1202896-51-2
Formula: C₁₁H₂₀N₂O₂
MW: 219.33 g/mol

VQ-043386

Reference Standard

Brivudine chemical structure

CAS: 69304-47-8
Formula: C₁₁H₁₃BrN₂O₅
MW: 333.13 g/mol

VQ-024657

Reference Standard

Brivudine Alpha Anomer chemical structure

Brivudine Alpha Anomer

CAS: 78731-55-2
Formula: C₁₁H₁₃BrN₂O₅
MW: 333.13 g/mol

VQ-024659

Reference Standard

Brivudine Impurity 5

Brivudine Impurity 5

CAS: 162756-95-8
Formula: C₂₅H₁₉BrCl₂N₂O₇
MW: 610.2 g/mol

VQ-045294

Reference Standard

Brodifacoum chemical structure

CAS: 56073-10-0
Formula: C₃₁H₂₃BrO₃
MW: 523.4 g/mol

VQ-036035

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