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

Imrecoxib

CAS: 395683-14-4
Formula: C₂₁H₂₃NO₃S
MW: 369.5 g/mol

VQ-048670

Reference Standard

Inavolisib

CAS: 2060571-02-8
Formula: C₁₈H₁₉F₂N₅O₄
MW: 407.4 g/mol

VQ-031186

Reference Standard

Indacaterol

CAS: 312753-06-3
Formula: C₂₄H₂₈N₂O₃
MW: 392.5 g/mol

VQ-031187

Reference Standard

Indacaterol acetate

CAS: 1000160-96-2
Formula: C₂₆H₃₂N₂O₅
MW: 452.5 g/mol

VQ-031191

Reference Standard

Indacaterol Maleate

CAS: 753498-25-8
Formula: C₂₈H₃₂N₂O₇
MW: 508.6 g/mol

VQ-026156

Reference Standard

Indapamide

CAS: 26807-65-8
Formula: C₁₆H₁₆ClN₃O₃S
MW: 365.8 g/mol

VQ-022844

Reference Standard

Indapamide Hemihydrate

CAS: 180004-24-4
Formula: C₃₂H₃₄Cl₂N₆O₇S₂
MW: 749.7 g/mol

VQ-044933

Reference Standard

Indicine

CAS: 480-82-0
Formula: C₁₅H₂₅NO₅
MW: 299.36 g/mol

VQ-048679

Reference Standard

Indicine Hydrochloride

CAS: 1195140-94-3
Formula: C₁₅H₂₆ClNO₅
MW: 335.82 g/mol

VQ-048680

Reference Standard

Indinavir sulfate

CAS: 157810-81-6
Formula: C₃₆H₄₉N₅O₈S
MW: 711.9 g/mol

VQ-031201

Reference Standard

Indocyanine Green Potassium

CAS: 121750-10-5
Formula: C₄₃H₄₉KN₂O₆S₂₂⁺
MW: 793.09 g/mol

VQ-037700

Reference Standard

Indoramin Hydrochloride

CAS: 38821-52-2
Formula: C₂₂H₂₆ClN₃O
MW: 383.9 g/mol

VQ-037703

Reference Standard

Infigratinib

CAS: 872511-34-7
Formula: C₂₆H₃₁Cl₂N₇O₃
MW: 560.5 g/mol

VQ-037709

Reference Standard

Infliximab

CAS: 170277-31-3

VQ-048688

Reference Standard

Ingavirin

CAS: 219694-63-0
Formula: C₁₀H₁₅N₃O₃
MW: 225.24 g/mol

VQ-031210

Reference Standard

Ingenol

CAS: 30220-46-3
Formula: C₂₀H₂₈O₅
MW: 348.4 g/mol

VQ-048689

Reference Standard

Inositol nicotinate

CAS: 6556-11-2
Formula: C₄₂H₃₀N₆O₁₂
MW: 810.7 g/mol

VQ-037712

Reference Standard

Intermedine

CAS: 10285-06-0
Formula: C₁₅H₂₅NO₅
MW: 299.36 g/mol

VQ-031212

Reference Standard

Iobitridol

CAS: 136949-58-1
Formula: C₂₀H₂₈I₃N₃O₉
MW: 835.2 g/mol

VQ-037713

Reference Standard

Iodixanol

CAS: 92339-11-2
Formula: C₃₅H₄₄I₆N₆O₁₅
MW: 1550.2 g/mol

VQ-026167

Reference Standard

Iomeprol

CAS: 78649-41-9
Formula: C₁₇H₂₂I₃N₃O₈
MW: 777.1 g/mol

VQ-031220

Reference Standard

Ionomycin Calcium

CAS: 56092-82-1
Formula: C₄₁H₇₀CaO₉
MW: 747.1 g/mol

VQ-019682

Reference Standard

Iopamidol

CAS: 60166-93-0
Formula: C₁₇H₂₂I₃N₃O₈
MW: 777.1 g/mol

VQ-026183

Reference Standard

Iopromide

CAS: 73334-07-3
Formula: C₁₈H₂₄I₃N₃O₈
MW: 791.1 g/mol

VQ-026190

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API Reference Standards

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