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

Oxybutynin Hydrochloride

CAS: 1508-65-2
Formula: C₂₂H₃₂ClNO₃
MW: 393.9 g/mol

VQ-027335

Reference Standard

Oxychlordane

CAS: 27304-13-8
Formula: C₁₀H₄Cl₈O
MW: 423.7 g/mol

VQ-032843

Reference Standard

Oxymetazoline Hydrochloride

CAS: 2315-02-8
Formula: C₁₆H₂₅ClN₂O
MW: 296.83 g/mol

VQ-033014

Reference Standard

Oxyphenonium Bromide

CAS: 50-10-2
Formula: C₂₁H₃₄BrNO₃
MW: 428.4 g/mol

VQ-039046

Reference Standard

Oxytocin Acetate

CAS: 6233-83-6
Formula: C₄₅H₇₀N₁₂O₁₄S₂
MW: 1067.2 g/mol

VQ-033018

Reference Standard

Ozanimod

CAS: 1306760-87-1
Formula: C₂₃H₂₄N₄O₃
MW: 404.5 g/mol

VQ-023446

Reference Standard

Ozanimod hydrochloride

CAS: 1618636-37-5
Formula: C₂₃H₂₅ClN₄O₃
MW: 440.9 g/mol

VQ-027348

Reference Standard

Ozenoxacin

CAS: 245765-41-7
Formula: C₂₁H₂₁N₃O₃
MW: 363.4 g/mol

VQ-023448

Reference Standard

P-[[(1R)-2-(6-Amino-3H-purin-3-yl)-1-methylethoxy]methyl]phosphonic acid

CAS: 1643116-24-8
Formula: C₉H₁₄N₅O₄P
MW: 287.21 g/mol

VQ-042418

Reference Standard

Pacritinib

CAS: 937272-79-2
Formula: C₂₈H₃₂N₄O₃
MW: 472.6 g/mol

VQ-040227

Reference Standard

Padimate O

CAS: 21245-02-3
Formula: C₁₇H₂₇NO₂
MW: 277.4 g/mol

VQ-043357

Reference Standard

Padoprazan

CAS: 2756367-23-2
Formula: C₁₉H₂₀FN₃O₄S
MW: 405.4 g/mol

VQ-041307

Reference Standard

Palbociclib Hydrochloride

CAS: 827022-32-2
Formula: C₂₄H₃₀ClN₇O₂
MW: 484 g/mol

VQ-007640

Reference Standard

Palbociclib WS

CAS: 571190-30-2
Formula: C₂₄H₂₉N₇O₂
MW: 447.5 g/mol

VQ-007641

Reference Standard

Paliperidone palmitate

CAS: 199739-10-1
Formula: C₃₉H₅₇FN₄O₄
MW: 664.9 g/mol

VQ-027367

Reference Standard

Palovarotene

CAS: 410528-02-8
Formula: C₂₇H₃₀N₂O₂
MW: 414.5 g/mol

VQ-045139

Reference Standard

Palustric Acid

CAS: 1945-53-5
Formula: C₂₀H₃₀O₂
MW: 302.5 g/mol

VQ-040894

Reference Standard

Pamabrom

CAS: 606-04-2
Formula: C₁₁H₁₈BrN₅O₃
MW: 348.2 g/mol

VQ-033044

Reference Standard

Pamidronic Acid

CAS: 40391-99-9
Formula: C₃H₁₁NO₇P₂
MW: 235.07 g/mol

VQ-038590

Reference Standard

Pangamic Acid Sodium Salt

CAS: 6888-14-8
Formula: C₁₀H₁₈NNaO₈
MW: 303.24 g/mol

VQ-041317

Reference Standard

Panobinostat

CAS: 404950-80-7
Formula: C₂₁H₂₃N₃O₂
MW: 349.4 g/mol

VQ-027379

Reference Standard

Pantoprazole

CAS: 102625-70-7
Formula: C₁₆H₁₅F₂N₃O₄S
MW: 383.4 g/mol

VQ-007642

Reference Standard

Pantoprazole Sodium Sesquihydrate

CAS: 164579-32-2
Formula: C₁₆H₁₇F₂N₃NaO₅S
MW: 424.4 g/mol

In stock

Reference Standard

Pantothenic Acid

CAS: 79-83-4
Formula: C₉H₁₇NO₅
MW: 219.23 g/mol

VQ-033050

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API Reference Standards

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