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

Chloroprocaine

CAS: 133-16-4
Formula: C₁₃H₁₉ClN₂O₂
MW: 270.75 g/mol

VQ-036246

Reference Standard

Chloroprocaine Hydrochloride

CAS: 3858-89-7
Formula: C₁₃H₂₀Cl₂N₂O₂
MW: 307.21 g/mol

VQ-043114

Reference Standard

Chloropyramine Hydrochloride

CAS: 6170-42-9
Formula: C₁₆H₂₁Cl₂N₃
MW: 326.3 g/mol

VQ-024932

Reference Standard

Chloropyrazin

CAS: 14508-49-7
Formula: C₄H₃ClN₂
MW: 114.53 g/mol

VQ-047757

Reference Standard

Chloroquinaldol

CAS: 72-80-0
Formula: C₁₀H₇Cl₂NO
MW: 228.07 g/mol

VQ-029760

Reference Standard

Chloroquine

CAS: 54-05-7
Formula: C₁₈H₂₆ClN₃
MW: 319.9 g/mol

VQ-036252

Reference Standard

Chloroquine Sulfate

CAS: 132-73-0
Formula: C₁₈H₂₈ClN₃O₄S
MW: 418 g/mol

VQ-031108

Reference Standard

Chloroquine Sulfate Monohydrate

CAS: 6823-83-2
Formula: C₁₈H₃₀ClN₃O₅S
MW: 436 g/mol

VQ-036251

Reference Standard

Chlorothalonil

CAS: 1897-45-6
Formula: C₈Cl₄N₂
MW: 265.9 g/mol

VQ-039320

Reference Standard

Chlorphenamine

CAS: 132-22-9
Formula: C₁₆H₁₉ClN₂
MW: 274.79 g/mol

VQ-007385

Reference Standard

Chlorphenamine Hydrochloride

CAS: 56343-98-7
Formula: C₁₆H₂₀Cl₂N₂
MW: 311.2 g/mol

VQ-036260

Reference Standard

Chlorphenamine Maleate

CAS: 113-92-8
Formula: C₂₀H₂₃ClN₂O₄
MW: 390.9 g/mol

In stock

Reference Standard

Chlorphenesin

CAS: 104-29-0
Formula: C₉H₁₁ClO₃
MW: 202.63 g/mol

VQ-029746

Reference Standard

Chlorpromazine Hydrochloride

CAS: 69-09-0
Formula: C₁₇H₂₀Cl₂N₂S
MW: 355.3 g/mol

VQ-022156

Reference Standard

Chlorpropamide

CAS: 94-20-2
Formula: C₁₀H₁₃ClN₂O₃S
MW: 276.74 g/mol

VQ-024943

Reference Standard

Chlorprothixene

CAS: 113-59-7
Formula: C₁₈H₁₈ClNS
MW: 315.9 g/mol

VQ-047766

Reference Standard

Chlorprothixene Hydrochloride

CAS: 6469-93-8
Formula: C₁₈H₁₉Cl₂NS
MW: 352.3 g/mol

VQ-024944

Reference Standard

Chlorpyrifos

CAS: 2921-88-2
Formula: C₉H₁₁Cl₃NO₃PS
MW: 350.6 g/mol

VQ-032711

Reference Standard

Chlortetracycline

CAS: 57-62-5
Formula: C₂₂H₂₃ClN₂O₈
MW: 478.9 g/mol

VQ-029766

Reference Standard

Chlorthalidone USP

CAS: 77-36-1
Formula: C₁₄H₁₁ClN₂O₄S
MW: 338.8 g/mol

In stock

Reference Standard

Chlorthion

CAS: 500-28-7
Formula: C₈H₉ClNO₅PS
MW: 297.65 g/mol

VQ-045187

Reference Standard

Chlorzoxazone WS

CAS: 95-25-0
Formula: C₇H₄ClNO₂
MW: 169.56 g/mol

In stock

Reference Standard

Cholesterol

CAS: 57-88-5
Formula: C₂₇H₄₆O
MW: 386.7 g/mol

In stock

Reference Standard

Cholesteryl oleate

CAS: 303-43-5
Formula: C₄₅H₇₈O₂
MW: 651.1 g/mol

VQ-040188

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API Reference Standards

Need a price, a spec or a custom compound?