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)-Stiripentol

CAS: 144017-65-2
Formula: C₁₄H₁₈O₃
MW: 234.29 g/mol

VQ-042274

Reference Standard

(R)-Tegoprazan

CAS: 942195-56-4
Formula: C₂₀H₁₉F₂N₃O₃
MW: 387.4 g/mol

VQ-023850

Reference Standard

(R)-Tetrahydropapaverine hydrochloride

CAS: 54417-53-7
Formula: C₂₀H₂₆ClNO₄
MW: 379.9 g/mol

VQ-035847

Reference Standard

(R)-Tirofiban

CAS: 158808-86-7
Formula: C₂₂H₃₆N₂O₅S
MW: 440.6 g/mol

VQ-034294

Reference Standard

(R)-Topotecan

CAS: 1797985-73-9
Formula: C₂₃H₂₃N₃O₅
MW: 421.4 g/mol

VQ-042616

Reference Standard

(R)-Viloxazine Hydrochloride

CAS: 56287-63-9
Formula: C₁₃H₂₀ClNO₃
MW: 273.75 g/mol

VQ-034632

Reference Standard

(R)-Zanubrutinib

CAS: 1691249-44-1
Formula: C₂₇H₂₉N₅O₃
MW: 471.5 g/mol

VQ-021364

Reference Standard

(RR,RR)-Nebivolol

CAS: 119365-29-6
Formula: C₂₂H₂₅F₂NO₄
MW: 405.4 g/mol

VQ-032091

Reference Standard

(RS,SR)-Nebivolol

CAS: 119365-30-9
Formula: C₂₂H₂₅F₂NO₄
MW: 405.4 g/mol

VQ-026843

Reference Standard

(S,R,R,R)-Orlistat

CAS: 111466-61-6
Formula: C₂₉H₅₃NO₅
MW: 495.7 g/mol

VQ-032279

Reference Standard

(S,R,R,S)-Nebivolol

CAS: 119365-23-0
Formula: C₂₂H₂₅F₂NO₄
MW: 405.4 g/mol

VQ-032077

Reference Standard

(S,R)-Ivosidenib

CAS: 2070009-31-1
Formula: C₂₈H₂₂ClF₃N₆O₃
MW: 583 g/mol

VQ-031352

Reference Standard

(S,R)-Labetalol

CAS: 83167-32-2
Formula: C₁₉H₂₄N₂O₃
MW: 328.4 g/mol

VQ-035029

Reference Standard

(S,S,R,R)-Orlistat

CAS: 111466-62-7
Formula: C₂₉H₅₃NO₅
MW: 495.7 g/mol

VQ-032282

Reference Standard

(S,S,S,S)-Nebivolol Hydrochloride

CAS: 920275-27-0
Formula: C₂₂H₂₆ClF₂NO₄
MW: 441.9 g/mol

VQ-032085

Reference Standard

(S,S)-Benidipine Hydrochloride

CAS: 129262-08-4
Formula: C₂₈H₃₂ClN₃O₆
MW: 542 g/mol

VQ-021765

Reference Standard

(S,S)-Fluvastatin Sodium Salt

CAS: 194935-01-8
Formula: C₂₄H₂₅FNNaO₄
MW: 433.4 g/mol

VQ-037383

Reference Standard

(S,S)-Formoterol

CAS: 67346-48-9
Formula: C₁₉H₂₄N₂O₄
MW: 344.4 g/mol

VQ-025908

Reference Standard

(S)-(-)-Carvedilol

CAS: 95094-00-1
Formula: C₂₄H₂₆N₂O₄
MW: 406.5 g/mol

VQ-022037

Reference Standard

(S)-(-)-Tolvaptan

CAS: 331947-44-5
Formula: C₂₆H₂₅ClN₂O₃
MW: 448.9 g/mol

VQ-034351

Reference Standard

(S)-(-)-Verapamil Hydrochloride

CAS: 36622-28-3
Formula: C₂₇H₃₉ClN₂O₄
MW: 491.1 g/mol

VQ-042855

Reference Standard

(S)-(+)-Dimethindene Maleate

CAS: 136152-65-3
Formula: C₂₄H₂₈N₂O₄
MW: 408.5 g/mol

VQ-030214

Reference Standard

(S)-(+)-Ibuprofen

CAS: 51146-56-6
Formula: C₁₃H₁₈O₂
MW: 206.28 g/mol

VQ-037624

Reference Standard

(S)-Acenocoumarol

CAS: 66556-78-3
Formula: C₁₉H₁₅NO₆
MW: 353.3 g/mol

VQ-029001

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API Reference Standards

Need a price, a spec or a custom compound?