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

(22R)-Budesonide

CAS: 51372-29-3
Formula: C₂₅H₃₄O₆
MW: 430.5 g/mol

VQ-021009

Reference Standard

(22S)-Budesonide

CAS: 51372-28-2
Formula: C₂₅H₃₄O₆
MW: 430.5 g/mol

VQ-021008

Reference Standard

(2R,3'R)-Glycopyrrolate Bromide

CAS: 475468-09-8
Formula: C₁₉H₂₈BrNO₃
MW: 398.3 g/mol

VQ-031020

Reference Standard

(2R,3S)-Efinaconazole

CAS: 2055038-60-1
Formula: C₁₈H₂₂F₂N₄O
MW: 348.4 g/mol

VQ-030397

Reference Standard

(2R,4R)-Teneligliptin

CAS: 1404559-17-6
Formula: C₂₂H₃₀N₆OS
MW: 426.6 g/mol

VQ-034094

Reference Standard

(2R,5R)-Avibactam Sodium

CAS: 1797133-98-2
Formula: C₇H₁₀N₃NaO₆S
MW: 287.23 g/mol

VQ-029305

Reference Standard

(2R,5S)-Ritlecitinib

CAS: 1792180-79-0
Formula: C₁₅H₁₉N₅O
MW: 285.34 g/mol

VQ-027840

Reference Standard

(2S 4R) Iptacopan

CAS: 3057514-75-4
Formula: C₂₅H₃₀N₂O₄
MW: 422.53 g/mol

VQ-026207

Reference Standard

(2S-Trans)-Diltiazem Hydrochloride

CAS: 103532-26-9
Formula: C₂₂H₂₇ClN₂O₄S
MW: 451 g/mol

VQ-043878

Reference Standard

(2S,2R',Trans)-Saxagliptin

CAS: 1564265-98-0
Formula: C₁₈H₂₅N₃O₂
MW: 315.4 g/mol

VQ-033775

Reference Standard

(2S,2S',Trans)-Saxagliptin

CAS: 1564265-96-8
Formula: C₁₈H₂₅N₃O₂
MW: 315.4 g/mol

VQ-033772

Reference Standard

(2S,3'S)-Glycopyrrolate Bromide

CAS: 201667-20-1
Formula: C₁₉H₂₈BrNO₃
MW: 398.3 g/mol

VQ-037547

Reference Standard

(2S,3R)-Efinaconazole

CAS: 2055038-61-2
Formula: C₁₈H₂₂F₂N₄O
MW: 348.4 g/mol

VQ-025492

Reference Standard

(2S,3S)-Efinaconazole

CAS: 164650-45-7
Formula: C₁₈H₂₂F₂N₄O
MW: 348.4 g/mol

VQ-022496

Reference Standard

(2S,3Z)-Cefprozil

CAS: 110764-35-7
Formula: C₁₈H₁₉N₃O₅S
MW: 389.4 g/mol

VQ-028819

Reference Standard

(2S,4R)-Teneligliptin

CAS: 1404559-15-4
Formula: C₂₂H₃₀N₆OS
MW: 426.6 g/mol

VQ-034095

Reference Standard

(2S,4S)-Argatroban

CAS: 189264-03-7
Formula: C₂₃H₃₆N₆O₅S
MW: 508.6 g/mol

VQ-043045

Reference Standard

(2S,5S)-Avibactam Sodium Salt

CAS: 2064219-26-5
Formula: C₇H₁₀N₃NaO₆S
MW: 287.23 g/mol

VQ-029304

Reference Standard

(3R,4R,5R)-Oseltamivir

CAS: 1402431-91-7
Formula: C₁₆H₂₈N₂O₄
MW: 312.4 g/mol

VQ-038797

Reference Standard

(3R,4S)-Tofacitinib

CAS: 1092578-46-5
Formula: C₁₆H₂₀N₆O
MW: 312.37 g/mol

VQ-028419

Reference Standard

(3R,5R)-Fluvastatin Sodium Salt

CAS: 194934-99-1
Formula: C₂₄H₂₅FNNaO₄
MW: 433.4 g/mol

VQ-037384

Reference Standard

(3R,5R)-Pitavastatin Calcium

CAS: 254452-96-5
Formula: C₅₀H₄₆CaF₂N₂O₈
MW: 881 g/mol

VQ-033224

Reference Standard

(3R,5S)-Atorvastatin Calcium salt

CAS: 1312366-79-2
Formula: C₆₆H₆₈CaF₂N₄O₁₀
MW: 1154.45 g/mol

VQ-024417

Reference Standard

(3R,5S)-Atorvastatin Sodium

CAS: 131275-93-9
Formula: C₃₃H₃₄FN₂NaO₅
MW: 580.6 g/mol

VQ-024398

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API Reference Standards

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