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

Diphenylpyraline Hydrochloride

CAS: 132-18-3
Formula: C₁₉H₂₄ClNO
MW: 317.9 g/mol

VQ-036734

Reference Standard

Dipivefrine Hydrochloride

CAS: 64019-93-8
Formula: C₁₉H₃₀ClNO₅
MW: 387.9 g/mol

VQ-043462

Reference Standard

Diprophylline

CAS: 479-18-5
Formula: C₁₀H₁₄N₄O₄
MW: 254.24 g/mol

VQ-025340

Reference Standard

Dipyridamole

CAS: 58-32-2
Formula: C₂₄H₄₀N₈O₄
MW: 504.6 g/mol

In stock

Reference Standard

Dipyridamole Hydrochloride

CAS: 35763-39-4
Formula: C₂₄H₄₀N₈O₄.xClH
MW: 541.13 g/mol

VQ-007430

Reference Standard

Diquafosol

CAS: 59985-21-6
Formula: C₁₈H₂₆N₄O₂₃P₄
MW: 790.3 g/mol

VQ-043140

Reference Standard

Diquafosol Tetrasodium

CAS: 211427-08-6
Formula: C₁₈H₂₂N₄Na₄O₂₃P₄
MW: 878.2 g/mol

VQ-036738

Reference Standard

Diquat dibromide

CAS: 85-00-7
Formula: C₁₂H₁₂Br₂N₂
MW: 344.04 g/mol

VQ-036742

Reference Standard

Dirithromycin

CAS: 62013-04-1
Formula: C₄₂H₇₈N₂O₁₄
MW: 835.1 g/mol

VQ-030234

Reference Standard

Diroximel Fumarate

CAS: 1577222-14-0
Formula: C₁₁H₁₃NO₆
MW: 255.22 g/mol

In stock

Reference Standard

Disopyramide

CAS: 3737-09-5
Formula: C₂₁H₂₉N₃O
MW: 339.5 g/mol

VQ-036746

Reference Standard

Dithranol

CAS: 1143-38-0
Formula: C₁₄H₁₀O₃
MW: 226.23 g/mol

VQ-034825

Reference Standard

Dityrosine

CAS: 63442-81-9
Formula: C₁₈H₂₀N₂O₆
MW: 360.4 g/mol

VQ-036750

Reference Standard

Dityrosine (Mixture of Diastereomers)

CAS: 980-21-2
Formula: C₁₈H₂₀N₂O₆
MW: 360.4 g/mol

VQ-048041

Reference Standard

Diuron

CAS: 330-54-1
Formula: C₉H₁₀Cl₂N₂O
MW: 233.09 g/mol

VQ-030240

Reference Standard

Divalproex sodium

CAS: 76584-70-8
Formula: C₁₆H₃₁NaO₄
MW: 310.4 g/mol

VQ-036751

Reference Standard

DL-Arabinose

CAS: 147-81-9
Formula: C₅H₁₀O₅
MW: 150.13 g/mol

VQ-038992

Reference Standard

DL-Cycloserine

CAS: 68-39-3
Formula: C₃H₆N₂O₂
MW: 102.09 g/mol

VQ-047894

Reference Standard

DL-Glyceraldehyde

CAS: 56-82-6
Formula: C₃H₆O₃
MW: 90.08 g/mol

VQ-040351

Reference Standard

DL-Lysine

CAS: 70-54-2
Formula: C₆H₁₄N₂O₂
MW: 146.19 g/mol

VQ-038229

Reference Standard

DL-Lysine Acetylsalicylate

CAS: 62952-06-1
Formula: C₁₅H₂₂N₂O₆
MW: 326.34 g/mol

VQ-048042

Reference Standard

Dobesilic Acid

CAS: 88-46-0
Formula: C₆H₆O₅S
MW: 190.18 g/mol

VQ-036755

Reference Standard

Dobutamine Hydrochloride

CAS: 49745-95-1
Formula: C₁₈H₂₄ClNO₃
MW: 337.8 g/mol

VQ-022407

Reference Standard

Docetaxel Trihydrate

CAS: 148408-66-6
Formula: C₄₃H₅₉NO₁₇
MW: 861.9 g/mol

VQ-025353

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API Reference Standards

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