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)-(-)-Etodolac

CAS: 87226-41-3
Formula: C₁₇H₂₁NO₃
MW: 287.35 g/mol

VQ-025660

Reference Standard

(R)-(-)-Ketoprofen

CAS: 56105-81-8
Formula: C₁₆H₁₄O₃
MW: 254.28 g/mol

VQ-031377

Reference Standard

(R)-(+)-Bupivacaine Hydrochloride

CAS: 27262-46-0
Formula: C₁₈H₂₉ClN₂O
MW: 324.9 g/mol

VQ-029539

Reference Standard

(R)-(+)-Camphor

CAS: 464-49-3
Formula: C₁₀H₁₆O
MW: 152.23 g/mol

VQ-019526

Reference Standard

(R)-(+)-Carvedilol

CAS: 95093-99-5
Formula: C₂₄H₂₆N₂O₄
MW: 406.5 g/mol

VQ-022036

Reference Standard

(R)-(+)-Nicardipine

CAS: 76093-35-1
Formula: C₂₆H₂₉N₃O₆
MW: 479.5 g/mol

VQ-038601

Reference Standard

(R)-(+)-Ropivacaine Hydrochloride

CAS: 112773-90-7
Formula: C₁₇H₂₇ClN₂O
MW: 310.9 g/mol

VQ-033649

Reference Standard

(R)-(+)-Tolvaptan

CAS: 331947-66-1
Formula: C₂₆H₂₅ClN₂O₃
MW: 448.9 g/mol

VQ-034350

Reference Standard

(R)-(+)-Verapamil Hydrochloride

CAS: 38176-02-2
Formula: C₂₇H₃₉ClN₂O₄
MW: 491.1 g/mol

VQ-042856

Reference Standard

(R)-(+)-Warfarin

CAS: 5543-58-8
Formula: C₁₉H₁₆O₄
MW: 308.3 g/mol

VQ-024036

Reference Standard

(R)-Acenocoumarol

CAS: 66556-77-2
Formula: C₁₉H₁₅NO₆
MW: 353.3 g/mol

VQ-029000

Reference Standard

(R)-Ambrisentan

CAS: 1007358-76-0
Formula: C₂₂H₂₂N₂O₄
MW: 378.4 g/mol

VQ-020779

Reference Standard

(R)-Atenolol

CAS: 56715-13-0
Formula: C₁₄H₂₂N₂O₃
MW: 266.34 g/mol

VQ-024388

Reference Standard

(R)-Azelastine Hydrochloride

CAS: 153408-28-7
Formula: C₂₂H₂₅Cl₂N₃O
MW: 418.4 g/mol

VQ-024471

Reference Standard

(R)-Baclofen

CAS: 69308-37-8
Formula: C₁₀H₁₂ClNO₂
MW: 213.66 g/mol

VQ-024486

Reference Standard

(R)-BendrofluMethiazide

CAS: 1087345-31-0
Formula: C₁₅H₁₄F₃N₃O₄S₂
MW: 421.4 g/mol

VQ-043906

Reference Standard

(R)-Benzphetamine Hydrochloride

CAS: 28646-36-8
Formula: C₁₇H₂₂ClN
MW: 275.8 g/mol

VQ-029399

Reference Standard

(R)-Bepotastine

CAS: 190730-41-7
Formula: C₂₁H₂₅ClN₂O₃
MW: 388.9 g/mol

VQ-021791

Reference Standard

(R)-Bepotastine Besylate

CAS: 190730-42-8
Formula: C₂₇H₃₁ClN₂O₆S
MW: 547.1 g/mol

VQ-024563

Reference Standard

(R)-Bicalutamide

CAS: 113299-40-4
Formula: C₁₈H₁₄F₄N₂O₄S
MW: 430.4 g/mol

VQ-029430

Reference Standard

(R)-Bupivacaine

CAS: 27262-45-9
Formula: C₁₈H₂₈N₂O
MW: 288.4 g/mol

VQ-045120

Reference Standard

(R)-Camptothecin

CAS: 110351-92-3
Formula: C₂₀H₁₆N₂O₄
MW: 348.4 g/mol

VQ-024733

Reference Standard

(R)-Carbidopa

CAS: 28875-92-5
Formula: C₁₀H₁₄N₂O₄
MW: 226.23 g/mol

VQ-022001

Reference Standard

(R)-Cefpodoxime Proxetil

CAS: 112345-70-7
Formula: C₂₁H₂₇N₅O₉S₂
MW: 557.59 g/mol

VQ-029701

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API Reference Standards

Need a price, a spec or a custom compound?