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

Metergoline

CAS: 17692-51-2
Formula: C₂₅H₂₉N₃O₂
MW: 403.5 g/mol

VQ-044630

Reference Standard

Metformin

CAS: 657-24-9
Formula: C₄H₁₁N₅
MW: 129.16 g/mol

VQ-007574

Reference Standard

Metformin Hydrochloride

CAS: 1115-70-4
Formula: C₄H₁₂ClN₅
MW: 165.62 g/mol

In stock

Reference Standard

Methacholine Chloride

CAS: 62-51-1
Formula: C₈H₁₈ClNO₂
MW: 195.69 g/mol

VQ-031817

Reference Standard

Methazolamide

CAS: 554-57-4
Formula: C₅H₈N₄O₃S₂
MW: 236.3 g/mol

VQ-031818

Reference Standard

Methdilazine Hydrochloride

CAS: 1229-35-2
Formula: C₁₈H₂₁ClN₂S
MW: 332.9 g/mol

VQ-049066

Reference Standard

Methenamine Hippurate

CAS: 5714-73-8
Formula: C₁₅H₂₁N₅O₃
MW: 319.36 g/mol

VQ-037578

Reference Standard

Methenolone Acetate

CAS: 434-05-9
Formula: C₂₂H₃₂O₃
MW: 344.5 g/mol

VQ-043604

Reference Standard

Methisoprinol

CAS: 36703-88-5
Formula: C₅₂H₇₈N₁₀O₁₇
MW: 1115.2 g/mol

VQ-026634

Reference Standard

Methohexital

CAS: 151-83-7
Formula: C₁₄H₁₈N₂O₃
MW: 262.3 g/mol

VQ-043860

Reference Standard

Methomyl

CAS: 16752-77-5
Formula: C₅H₁₀N₂O₂S
MW: 162.21 g/mol

VQ-031821

Reference Standard

Methotrexate

CAS: 59-05-2
Formula: C₂₀H₂₂N₈O₅
MW: 454.4 g/mol

VQ-007576

Reference Standard

Methotrexate Disodium Salt

CAS: 7413-34-5
Formula: C₂₀H₂₀N₈Na₂O₅
MW: 498.4 g/mol

In stock

Reference Standard

Methoxsalen

CAS: 298-81-7
Formula: C₁₂H₈O₄
MW: 216.19 g/mol

VQ-028767

Reference Standard

Methsuximide

CAS: 77-41-8
Formula: C₁₂H₁₃NO₂
MW: 203.24 g/mol

VQ-043549

Reference Standard

Methyclothiazide

CAS: 135-07-9
Formula: C₉H₁₁Cl₂N₃O₄S₂
MW: 360.2 g/mol

VQ-031834

Reference Standard

Methyl Arachidonate

CAS: 2566-89-4
Formula: C₂₁H₃₄O₂
MW: 318.5 g/mol

VQ-032712

Reference Standard

Methyl Caprate

CAS: 110-42-9
Formula: C₁₁H₂₂O₂
MW: 186.29 g/mol

VQ-039502

Reference Standard

Methyl margarate

CAS: 1731-92-6
Formula: C₁₈H₃₆O₂
MW: 284.5 g/mol

VQ-038895

Reference Standard

Methyl Octanoate

CAS: 111-11-5
Formula: C₉H₁₈O₂
MW: 158.24 g/mol

VQ-039499

Reference Standard

Methyl valerimidate hydrochloride

CAS: 39739-46-3
Formula: C₆H₁₄ClNO
MW: 151.63 g/mol

VQ-039031

Reference Standard

Methyldopa Hydrate

CAS: 41372-08-1
Formula: C₁₀H₁₅NO₅
MW: 229.23 g/mol

VQ-026644

Reference Standard

Methyldopate Hydrochloride

CAS: 2508-79-4
Formula: C₁₂H₁₈ClNO₄
MW: 275.73 g/mol

VQ-049088

Reference Standard

Methylnaltrexone

CAS: 916055-93-1
Formula: C₂₁H₂₆NO₄⁺
MW: 356.4 g/mol

VQ-038376

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API Reference Standards

Need a price, a spec or a custom compound?