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

Walborskys Reagent

CAS: 14542-93-9
Formula: C₉H₁₇N
MW: 139.24 g/mol

VQ-007857

Reference Standard

Warfarin

CAS: 81-81-2
Formula: C₁₉H₁₆O₄
MW: 308.3 g/mol

VQ-028766

Reference Standard

Warfarin Sodium

CAS: 129-06-6
Formula: C₁₉H₁₅NaO₄
MW: 330.3 g/mol

VQ-034707

Reference Standard

Withaferin A

CAS: 5119-48-2
Formula: C₂₈H₃₈O₆
MW: 470.6 g/mol

VQ-042966

Reference Standard

Withanolide A

CAS: 32911-62-9
Formula: C₂₈H₃₈O₆
MW: 470.6 g/mol

VQ-042967

Reference Standard

Withanone

CAS: 27570-38-3
Formula: C₂₈H₃₈O₆
MW: 470.6 g/mol

VQ-040759

Reference Standard

Withanoside V

CAS: 256520-90-8
Formula: C₄₀H₆₂O₁₄
MW: 766.9 g/mol

VQ-042970

Reference Standard

Xanomeline

CAS: 131986-45-3
Formula: C₁₄H₂₃N₃OS
MW: 281.42 g/mol

VQ-042973

Reference Standard

Xanomeline tartrate

CAS: 152854-19-8
Formula: C₁₈H₂₉N₃O₇S
MW: 431.5 g/mol

VQ-042975

Reference Standard

Xanthone

CAS: 90-47-1
Formula: C₁₃H₈O₂
MW: 196.2 g/mol

VQ-033359

Reference Standard

Xanthorrhizol

CAS: 30199-26-9
Formula: C₁₅H₂₂O
MW: 218.33 g/mol

VQ-040599

Reference Standard

Xipamide

CAS: 14293-44-8
Formula: C₁₅H₁₅ClN₂O₄S
MW: 354.8 g/mol

VQ-043349

Reference Standard

Xylazine

CAS: 7361-61-7
Formula: C₁₂H₁₆N₂S
MW: 220.34 g/mol

VQ-042983

Reference Standard

Xylazine Hydrochloride

CAS: 23076-35-9
Formula: C₁₂H₁₇ClN₂S
MW: 256.8 g/mol

VQ-034715

Reference Standard

Xylometazoline

CAS: 526-36-3
Formula: C₁₆H₂₄N₂
MW: 244.37 g/mol

VQ-033015

Reference Standard

Zafirlukast

CAS: 107753-78-6
Formula: C₃₁H₃₃N₃O₆S
MW: 575.7 g/mol

VQ-034717

Reference Standard

Zaltoprofen

CAS: 74711-43-6
Formula: C₁₇H₁₄O₃S
MW: 298.4 g/mol

VQ-034728

Reference Standard

Zalunfiban

CAS: 1448313-27-6
Formula: C₁₆H₁₈N₈O₂S
MW: 386.4 g/mol

VQ-042991

Reference Standard

Zanamivir

CAS: 139110-80-8
Formula: C₁₂H₂₀N₄O₇
MW: 332.31 g/mol

VQ-034729

Reference Standard

Zanamivir Hydrate

CAS: 551942-41-7
Formula: C₁₂H₂₂N₄O₈
MW: 350.33 g/mol

VQ-042992

Reference Standard

Zanubrutinib

CAS: 1691249-45-2
Formula: C₂₇H₂₉N₅O₃
MW: 471.5 g/mol

VQ-028771

Reference Standard

Zavegepant

CAS: 1337918-83-8
Formula: C₃₆H₄₆N₈O₃
MW: 638.8 g/mol

VQ-034730

Reference Standard

Zavegepant Hydrochloride

CAS: 1414976-20-7
Formula: C₃₆H₄₇ClN₈O₃
MW: 675.3 g/mol

VQ-040115

Reference Standard

Zearalenone

CAS: 17924-92-4
Formula: C₁₈H₂₂O₅
MW: 318.4 g/mol

VQ-034735

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API Reference Standards

Need a price, a spec or a custom compound?