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

Levamisole Phosphate

CAS: 32093-35-9
Formula: C₁₁H₁₅N₂O₄PS
MW: 302.29 g/mol

VQ-032902

Reference Standard

Levamlodipine Besylate Hemipentahydrate

CAS: 884648-62-8
Formula: C₅₂H₇₂Cl₂N₄O₂₁S₂
MW: 1224.2 g/mol

VQ-035705

Reference Standard

Levetiracetam

CAS: 102767-28-2
Formula: C₈H₁₄N₂O₂
MW: 170.21 g/mol

In stock

Reference Standard

Levocabastine Hydrochloride

CAS: 79547-78-7
Formula: C₂₆H₃₀ClFN₂O₂
MW: 457 g/mol

VQ-022959

Reference Standard

Levocarnitine Orotate

CAS: 160468-17-7
Formula: C₁₂H₁₉N₃O₇
MW: 317.3 g/mol

VQ-049449

Reference Standard

Levocetirizine

CAS: 130018-77-8
Formula: C₂₁H₂₅ClN₂O₃
MW: 388.9 g/mol

VQ-007539

Reference Standard

Levocetirizine dihydrochloride

CAS: 130018-87-0
Formula: C₂₁H₂₇Cl₃N₂O₃
MW: 461.8 g/mol

VQ-007540

Reference Standard

Levocetirizine Hydrochloride

CAS: 823178-28-5
Formula: C₂₁H₂₆Cl₂N₂O₃
MW: 425.3 g/mol

In stock

Reference Standard

Levodropropizine

CAS: 99291-25-5
Formula: C₁₃H₂₀N₂O₂
MW: 236.31 g/mol

VQ-022962

Reference Standard

Levofloxacin Hemihydrate

CAS: 138199-71-0
Formula: C₃₆H₄₂F₂N₆O₉
MW: 740.7 g/mol

VQ-026441

Reference Standard

Levomefolate Calcium

CAS: 151533-22-1
Formula: C₂₀H₂₃CaN₇O₆
MW: 497.5 g/mol

VQ-043206

Reference Standard

Levomepromazine hydrochloride

CAS: 1236-99-3
Formula: C₁₉H₂₅ClN₂OS
MW: 364.9 g/mol

VQ-031532

Reference Standard

Levomepromazine Maleate

CAS: 7104-38-3
Formula: C₂₃H₂₈N₂O₅S
MW: 444.5 g/mol

VQ-026446

Reference Standard

Levonorgestrel

CAS: 797-63-7
Formula: C₂₁H₂₈O₂
MW: 312.4 g/mol

VQ-022976

Reference Standard

Levosimendan

CAS: 141505-33-1
Formula: C₁₄H₁₂N₆O
MW: 280.28 g/mol

VQ-031539

Reference Standard

Levosulpiride

CAS: 23672-07-3
Formula: C₁₅H₂₃N₃O₄S
MW: 341.4 g/mol

VQ-026456

Reference Standard

Levothyroxine Sodium

CAS: 55-03-8
Formula: C₁₅H₁₀I₄NNaO₄
MW: 798.85 g/mol

VQ-026458

Reference Standard

Levothyroxine Sodium Hydrate

CAS: 25416-65-3
Formula: C₁₅H₁₂I₄NNaO₅
MW: 816.87 g/mol

VQ-043211

Reference Standard

Levothyroxine WS

CAS: 51-48-9
Formula: C₁₅H₁₁I₄NO₄
MW: 776.87 g/mol

In stock

Reference Standard

Lidocaine

CAS: 137-58-6
Formula: C₁₄H₂₂N₂O
MW: 234.34 g/mol

In stock

Reference Standard

Lidocaine Hydrochloride

CAS: 73-78-9
Formula: C₁₄H₂₃ClN₂O
MW: 270.8 g/mol

In stock

Reference Standard

Lifitegrast

CAS: 1025967-78-5
Formula: C₂₉H₂₄Cl₂N₂O₇S
MW: 615.5 g/mol

VQ-031550

Reference Standard

Limaprost

CAS: 74397-12-9
Formula: C₂₂H₃₆O₅
MW: 380.5 g/mol

VQ-038039

Reference Standard

Linaclotide

CAS: 851199-59-2
Formula: C₅₉H₇₉N₁₅O₂₁S₆
MW: 1526.8 g/mol

VQ-031556

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API Reference Standards

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