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

Raltegravir Potassium

CAS: 871038-72-1
Formula: C₂₀H₂₀FKN₆O₅
MW: 482.5 g/mol

VQ-033427

Reference Standard

Ramelteon

CAS: 196597-26-9
Formula: C₁₆H₂₁NO₂
MW: 259.34 g/mol

VQ-033434

Reference Standard

Ramipril

CAS: 87333-19-5
Formula: C₂₃H₃₂N₂O₅
MW: 416.5 g/mol

In stock

Reference Standard

Ramosetron

CAS: 132036-88-5
Formula: C₁₇H₁₇N₃O
MW: 279.34 g/mol

VQ-041834

Reference Standard

Ramosetron Hydrochloride

CAS: 132907-72-3
Formula: C₁₇H₁₈ClN₃O
MW: 315.8 g/mol

VQ-033450

Reference Standard

Ranitidine

CAS: 66357-35-5
Formula: C₁₃H₂₂N₄O₃S
MW: 314.41 g/mol

VQ-007695

Reference Standard

Ranitidine Hydrochloride

CAS: 66357-59-3
Formula: C₁₃H₂₃ClN₄O₃S
MW: 350.87 g/mol

In stock

Reference Standard

Ranolazine WS

CAS: 95635-55-5
Formula: C₂₄H₃₃N₃O₄
MW: 427.5 g/mol

In stock

Reference Standard

Rapamycin

CAS: 53123-88-9
Formula: C₅₁H₇₉NO₁₃
MW: 914.2 g/mol

In stock

Reference Standard

Rasagiline Hemitartarate WS

CAS: 136236-52-7
Formula: C₂₈H₃₂N₂O₆
MW: 492.6 g/mol

In stock

Reference Standard

Rasagiline Mesylate

CAS: 161735-79-1
Formula: C₁₃H₁₇NO₃S
MW: 267.35 g/mol

VQ-033463

Reference Standard

Rasagiline WS

CAS: 136236-51-6
Formula: C₁₂H₁₃N
MW: 171.24 g/mol

VQ-007700

Reference Standard

Raubasine

CAS: 483-04-5
Formula: C₂₁H₂₄N₂O₃
MW: 352.4 g/mol

VQ-041849

Reference Standard

Ravidasvir Hydrochloride

CAS: 1303533-81-4
Formula: C₄₂H₅₂Cl₂N₈O₆
MW: 835.8 g/mol

VQ-045140

Reference Standard

Ravuconazole

CAS: 182760-06-1
Formula: C₂₂H₁₇F₂N₅OS
MW: 437.5 g/mol

VQ-033472

Reference Standard

Rebamipide

CAS: 90098-04-7
Formula: C₁₉H₁₅ClN₂O₄
MW: 370.8 g/mol

VQ-023614

Reference Standard

Rebaudioside C

CAS: 63550-99-2
Formula: C₄₄H₇₀O₂₂
MW: 951 g/mol

VQ-033477

Reference Standard

Reboxetine Mesylate

CAS: 98769-84-7
Formula: C₂₀H₂₇NO₆S
MW: 409.5 g/mol

VQ-034891

Reference Standard

Regadenoson

CAS: 313348-27-5
Formula: C₁₅H₁₈N₈O₅
MW: 390.35 g/mol

VQ-033479

Reference Standard

Regorafenib

CAS: 755037-03-7
Formula: C₂₁H₁₅ClF₄N₄O₃
MW: 482.8 g/mol

VQ-007701

Reference Standard

Regorafenib Monohydrate

CAS: 1019206-88-2
Formula: C₂₁H₁₇ClF₄N₄O₄
MW: 500.8 g/mol

In stock

Reference Standard

Relebactam

CAS: 1174018-99-5
Formula: C₁₂H₂₀N₄O₆S
MW: 348.38 g/mol

VQ-027767

Reference Standard

Relugolix

CAS: 737789-87-6
Formula: C₂₉H₂₇F₂N₇O₅S
MW: 623.6 g/mol

In stock

Reference Standard

Remdesivir WS

CAS: 1809249-37-3
Formula: C₂₇H₃₅N₆O₈P
MW: 602.6 g/mol

VQ-007704

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API Reference Standards

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