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

Sodium stearyl maleate

CAS: 5373-51-3
Formula: C₂₂H₃₉NaO₄
MW: 390.5 g/mol

VQ-023772

Reference Standard

Sodium Taurolithocholate

CAS: 6042-32-6
Formula: C₂₆H₄₄NNaO₅S
MW: 505.7 g/mol

VQ-044224

Reference Standard

Sofosbuvir

CAS: 1190307-88-0
Formula: C₂₂H₂₉FN₃O₉P
MW: 529.5 g/mol

VQ-023773

Reference Standard

Sofpironium Bromide

CAS: 1628106-94-4
Formula: C₂₂H₃₂BrNO₅
MW: 470.4 g/mol

VQ-033905

Reference Standard

Solanesol

CAS: 13190-97-1
Formula: C₄₅H₇₄O
MW: 631.1 g/mol

VQ-038615

Reference Standard

Solifenacin

CAS: 242478-37-1
Formula: C₂₃H₂₆N₂O₂
MW: 362.5 g/mol

VQ-033906

Reference Standard

Solifenacin Succinate

CAS: 242478-38-2
Formula: C₂₇H₃₂N₂O₆
MW: 480.6 g/mol

VQ-033907

Reference Standard

Solriamfetol

CAS: 178429-62-4
Formula: C₁₀H₁₄N₂O₂
MW: 194.23 g/mol

VQ-042229

Reference Standard

Solriamfetol hydrochloride

CAS: 178429-65-7
Formula: C₁₀H₁₅ClN₂O₂
MW: 230.69 g/mol

VQ-028087

Reference Standard

Somatostatin

CAS: 38916-34-6
Formula: C₇₆H₁₀₄N₁₈O₁₉S₂
MW: 1637.9 g/mol

VQ-028088

Reference Standard

Sonidegib

CAS: 956697-53-3
Formula: C₂₆H₂₆F₃N₃O₃
MW: 485.5 g/mol

VQ-033921

Reference Standard

Sorafenib

CAS: 284461-73-0
Formula: C₂₁H₁₆ClF₃N₄O₃
MW: 464.8 g/mol

VQ-007761

Reference Standard

Sorafenib Tosylate

CAS: 475207-59-1
Formula: C₂₈H₂₄ClF₃N₄O₆S
MW: 637 g/mol

In stock

Reference Standard

Sorbic Acid

CAS: 110-44-1
Formula: C₆H₈O₂
MW: 112.13 g/mol

VQ-007763

Reference Standard

Sotagliflozin

CAS: 1018899-04-1
Formula: C₂₁H₂₅ClO₅S
MW: 424.9 g/mol

VQ-028093

Reference Standard

Sotalol

CAS: 3930-20-9
Formula: C₁₂H₂₀N₂O₃S
MW: 272.37 g/mol

In stock

Reference Standard

Sotalol Hydrochloride

CAS: 959-24-0
Formula: C₁₂H₂₁ClN₂O₃S
MW: 308.83 g/mol

VQ-023789

Reference Standard

Sotorasib

CAS: 2296729-00-3
Formula: C₃₀H₃₀F₂N₆O₃
MW: 560.6 g/mol

VQ-023793

Reference Standard

Sovateltide

CAS: 142569-99-1
Formula: C₈₆H₁₁₇N₁₇O₂₇
MW: 1820.9 g/mol

VQ-033933

Reference Standard

Sparsentan

CAS: 254740-64-2
Formula: C₃₂H₄₀N₄O₅S
MW: 592.8 g/mol

VQ-028096

Reference Standard

Spectinomycin

CAS: 1695-77-8
Formula: C₁₄H₂₄N₂O₇
MW: 332.35 g/mol

VQ-042246

Reference Standard

Spectinomycin Dihydrochloride

CAS: 21736-83-4
Formula: C₁₄H₂₆Cl₂N₂O₇
MW: 405.3 g/mol

VQ-042241

Reference Standard

Spectinomycin Hydrochloride

CAS: 22193-75-5
Formula: C₁₄H₂₅ClN₂O₇
MW: 368.81 g/mol

VQ-042243

Reference Standard

Spectinomycin sulfate

CAS: 23312-56-3
Formula: C₁₄H₂₆N₂O₁₁S
MW: 430.43 g/mol

VQ-042244

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API Reference Standards

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