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

(R)-Colchicine

CAS: 75520-89-7
Formula: C₂₂H₂₅NO₆
MW: 399.4 g/mol

VQ-029922

Reference Standard

(R)-Dapoxetine Hydrochloride

CAS: 156453-51-9
Formula: C₂₁H₂₄ClNO
MW: 341.9 g/mol

VQ-022310

Reference Standard

(R)-Darifenacin

CAS: 133099-05-5
Formula: C₂₈H₃₀N₂O₂
MW: 426.5 g/mol

VQ-030056

Reference Standard

(R)-Darifenacin Hydrobromide

CAS: 1092800-15-1
Formula: C₂₈H₃₁BrN₂O₂
MW: 507.5 g/mol

VQ-030049

Reference Standard

(R)-Diprophylline

CAS: 72376-78-4
Formula: C₁₀H₁₄N₄O₄
MW: 254.24 g/mol

VQ-048037

Reference Standard

(R)-Donepezil

CAS: 142698-19-9
Formula: C₂₄H₂₉NO₃
MW: 379.5 g/mol

VQ-036786

Reference Standard

(R)-Elexacaftor

CAS: 2229860-99-3
Formula: C₂₆H₃₄F₃N₇O₄S
MW: 597.7 g/mol

VQ-025508

Reference Standard

(R)-Erdosteine

CAS: 160550-67-4
Formula: C₈H₁₁NO₄S₂
MW: 249.3 g/mol

VQ-037042

Reference Standard

(R)-Finerenone

CAS: 1050477-30-9
Formula: C₂₁H₂₂N₄O₃
MW: 378.4 g/mol

VQ-022648

Reference Standard

(R)-Ibuprofen

CAS: 51146-57-7
Formula: C₁₃H₁₈O₂
MW: 206.28 g/mol

VQ-037625

Reference Standard

(R)-Indoxacarb

CAS: 185608-75-7
Formula: C₂₂H₁₇ClF₃N₃O₇
MW: 527.8 g/mol

VQ-037707

Reference Standard

(R)-Iopamidol

CAS: 88375-91-1
Formula: C₁₇H₂₂I₃N₃O₈
MW: 777.1 g/mol

VQ-037718

Reference Standard

(R)-Ivabradine Hydrochloride

CAS: 148849-68-7
Formula: C₂₇H₃₇ClN₂O₅
MW: 505 g/mol

VQ-021244

Reference Standard

(R)-Ketorolac

CAS: 66635-93-6
Formula: C₁₅H₁₃NO₃
MW: 255.27 g/mol

VQ-031385

Reference Standard

(R)-Lercanidipine Hydrochloride

CAS: 187731-34-6
Formula: C₃₆H₄₂ClN₃O₆
MW: 648.2 g/mol

VQ-031489

Reference Standard

(R)-Medetomidine

CAS: 119717-21-4
Formula: C₁₃H₁₆N₂
MW: 200.28 g/mol

VQ-043924

Reference Standard

(R)-Methocarbamol

CAS: 145841-69-6
Formula: C₁₁H₁₅NO₅
MW: 241.24 g/mol

VQ-038355

Reference Standard

(R)-Metoprolol

CAS: 81024-43-3
Formula: C₁₅H₂₅NO₃
MW: 267.36 g/mol

VQ-038381

Reference Standard

(R)-Pirtobrutinib

CAS: 2101700-14-3
Formula: C₂₂H₂₁F₄N₅O₃
MW: 479.4 g/mol

VQ-033222

Reference Standard

(R)-Pomalidomide

CAS: 202271-90-7
Formula: C₁₃H₁₁N₃O₄
MW: 273.24 g/mol

VQ-027553

Reference Standard

(R)-Praziquantel

CAS: 57452-98-9
Formula: C₁₉H₂₄N₂O₂
MW: 312.4 g/mol

VQ-033289

Reference Standard

(R)-Propafenone

CAS: 107381-31-7
Formula: C₂₁H₂₇NO₃
MW: 341.4 g/mol

VQ-041713

Reference Standard

(R)-Ramelteon

CAS: 196597-27-0
Formula: C₁₆H₂₁NO₂
MW: 259.34 g/mol

VQ-027735

Reference Standard

(R)-Safinamide

CAS: 174756-44-6
Formula: C₁₇H₁₉FN₂O₂
MW: 302.34 g/mol

VQ-027969

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API Reference Standards

Need a price, a spec or a custom compound?