How many api reference standards do you supply?

We currently list 583 api reference standards, such as Digoxin, Doxepin, Estriol. We can also source or custom-synthesise items that are not listed.

Do api reference standards come with a COA and SDS?

Yes. Each lot is supplied with a batch Certificate of Analysis and a 16-section GHS Safety Data Sheet. Typical COAs can be shared before you order.

Can you export api reference standards to my country?

Yes. We ship worldwide by sea freight, air cargo and express courier, with export documentation, and pack hazardous materials to IATA/IMDG dangerous-goods rules.

Impurities & Reference Standards

API Reference Standards

583 api reference standards with CAS numbers, structures and specifications — batch COA and GHS SDS supplied.

3,436products

377in stock

COA + SDSwith every lot

Reference Standard

Bupranolol Hydrochloride

CAS: 15148-80-8
Formula: C₁₄H₂₃Cl₂NO₂
MW: 308.2 g/mol

VQ-036047

Reference Standard

Buprenorphine

CAS: 52485-79-7
Formula: C₂₉H₄₁NO₄
MW: 467.6 g/mol

VQ-007362

Reference Standard

Buprenorphine Hydrochloride

CAS: 53152-21-9
Formula: C₂₉H₄₂ClNO₄
MW: 504.1 g/mol

VQ-007363

Reference Standard

Buprofezin

CAS: 69327-76-0
Formula: C₁₆H₂₃N₃OS
MW: 305.4 g/mol

VQ-038908

Reference Standard

Bupropion

CAS: 34911-55-2
Formula: C₁₃H₁₈ClNO
MW: 239.74 g/mol

VQ-043085

Reference Standard

Bupropion Hydrobromide

CAS: 905818-69-1
Formula: C₁₃H₁₉BrClNO
MW: 320.65 g/mol

VQ-043459

Reference Standard

Bupropion Hydrochloride

CAS: 31677-93-7
Formula: C₁₃H₁₉Cl₂NO
MW: 276.2 g/mol

VQ-021919

Reference Standard

Buserelin

CAS: 57982-77-1
Formula: C₆₀H₈₆N₁₆O₁₃
MW: 1239.4 g/mol

VQ-029558

Reference Standard

Buserelin Acetate

CAS: 68630-75-1
Formula: C₆₂H₉₀N₁₆O₁₅
MW: 1299.5 g/mol

VQ-036055

Reference Standard

Buspirone

CAS: 36505-84-7
Formula: C₂₁H₃₁N₅O₂
MW: 385.5 g/mol

VQ-043831

Reference Standard

Busulfan

CAS: 55-98-1
Formula: C₆H₁₄O₆S₂
MW: 246.3 g/mol

VQ-021940

Reference Standard

Butamirate

CAS: 18109-80-3
Formula: C₁₈H₂₉NO₃
MW: 307.4 g/mol

VQ-021029

Reference Standard

Butamirate Citrate

CAS: 18109-81-4
Formula: C₂₄H₃₇NO₁₀
MW: 499.6 g/mol

VQ-024706

Reference Standard

Butenafine

CAS: 101828-21-1
Formula: C₂₃H₂₇N
MW: 317.5 g/mol

VQ-036064

Reference Standard

Butenafine Hydrochloride

CAS: 101827-46-7
Formula: C₂₃H₂₈ClN
MW: 353.9 g/mol

VQ-024709

Reference Standard

Butoconazole Nitrate

CAS: 64872-77-1
Formula: C₁₉H₁₈Cl₃N₃O₃S
MW: 474.8 g/mol

VQ-034946

Reference Standard

Butyl Parahydroxybenzoate Sodium

CAS: 36457-20-2
Formula: C₁₁H₁₃NaO₃
MW: 216.21 g/mol

VQ-047652

Reference Standard

Cabazitaxel WS

CAS: 183133-96-2
Formula: C₄₅H₅₇NO₁₄
MW: 835.9 g/mol

In stock

Reference Standard

Cabotegravir

CAS: 1051375-10-0
Formula: C₁₉H₁₇F₂N₃O₅
MW: 405.4 g/mol

In stock

Reference Standard

Cabozantinib Hydrochloride

CAS: 1817759-42-4
Formula: C₂₈H₂₅ClFN₃O₅
MW: 538 g/mol

VQ-044244

Reference Standard

Cabozantinib WS

CAS: 849217-68-1
Formula: C₂₈H₂₄FN₃O₅
MW: 501.5 g/mol

In stock

Reference Standard

Cafedrine

CAS: 58166-83-9
Formula: C₁₈H₂₃N₅O₃
MW: 357.4 g/mol

VQ-021039

Reference Standard

Caffeine Citrate

CAS: 69-22-7
Formula: C₁₄H₁₈N₄O₉
MW: 386.31 g/mol

VQ-036080

Reference Standard

Cagrilintide

CAS: 1415456-99-3
Formula: C₁₉₄H₃₁₂N₅₄O₅₉S₂
MW: 4409 g/mol

VQ-036084

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API Reference Standards

Need a price, a spec or a custom compound?