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

Methylnaltrexone Bromide

CAS: 73232-52-7
Formula: C₂₁H₂₆BrNO₄
MW: 436.3 g/mol

VQ-038550

Reference Standard

Methylprednisolone hydrogen succinate

CAS: 2921-57-5
Formula: C₂₆H₃₄O₈
MW: 474.5 g/mol

VQ-023097

Reference Standard

Methylprednisolone Sodium Succinate

CAS: 2375-03-3
Formula: C₂₆H₃₃NaO₈
MW: 496.5 g/mol

VQ-038368

Reference Standard

Metoclopramide

CAS: 364-62-5
Formula: C₁₄H₂₂ClN₃O₂
MW: 299.79 g/mol

VQ-026648

Reference Standard

Metoclopramide Hydrochloride

CAS: 7232-21-5
Formula: C₁₄H₂₅Cl₂N₃O₃
MW: 354.3 g/mol

VQ-031847

Reference Standard

Metolazone

CAS: 17560-51-9
Formula: C₁₆H₁₆ClN₃O₃S
MW: 365.8 g/mol

VQ-026654

Reference Standard

Metomidate Hydrochloride

CAS: 35944-74-2
Formula: C₁₃H₁₅ClN₂O₂
MW: 266.72 g/mol

VQ-031849

Reference Standard

Metopimazine

CAS: 14008-44-7
Formula: C₂₂H₂₇N₃O₃S₂
MW: 445.6 g/mol

VQ-031850

Reference Standard

Metopimazine Acid

CAS: 18182-00-8
Formula: C₂₂H₂₆N₂O₄S₂
MW: 446.6 g/mol

VQ-031851

Reference Standard

Metoprolol

CAS: 51384-51-1
Formula: C₁₅H₂₅NO₃
MW: 267.36 g/mol

VQ-007578

Reference Standard

Metoprolol Fumarate

CAS: 80274-67-5
Formula: C₃₄H₅₄N₂O₁₀
MW: 650.8 g/mol

VQ-007579

Reference Standard

Metoprolol Fumarate

CAS: 119637-66-0
Formula: C₃₄H₅₄N₂O₁₀
MW: 650.8 g/mol

VQ-049096

Reference Standard

Metoprolol Succinate WS

CAS: 98418-47-4
Formula: C₃₄H₅₆N₂O₁₀
MW: 652.8 g/mol

In stock

Reference Standard

Metoprolol Tartrate

CAS: 56392-17-7
Formula: C₃₄H₅₆N₂O₁₂
MW: 684.8 g/mol

VQ-007581

Reference Standard

Metribuzin

CAS: 21087-64-9
Formula: C₈H₁₄N₄OS
MW: 214.29 g/mol

VQ-032351

Reference Standard

Mexiletine

CAS: 31828-71-4
Formula: C₁₁H₁₇NO
MW: 179.26 g/mol

VQ-031867

Reference Standard

Mexiletine Hydrochloride

CAS: 5370-01-4
Formula: C₁₁H₁₈ClNO
MW: 215.72 g/mol

VQ-031866

Reference Standard

Mianserin Hydrochloride

CAS: 21535-47-7
Formula: C₁₈H₂₁ClN₂
MW: 300.8 g/mol

VQ-023126

Reference Standard

Micafungin

CAS: 235114-32-6
Formula: C₅₆H₇₁N₉O₂₃S
MW: 1270.3 g/mol

VQ-031873

Reference Standard

Micafungin Sodium

CAS: 208538-73-2
Formula: C₅₆H₇₀N₉NaO₂₃S
MW: 1292.3 g/mol

VQ-031872

Reference Standard

Miconazole

CAS: 22916-47-8
Formula: C₁₈H₁₄Cl₄N₂O
MW: 416.1 g/mol

VQ-026683

Reference Standard

Midodrine

CAS: 42794-76-3
Formula: C₁₂H₁₈N₂O₄
MW: 254.28 g/mol

VQ-031890

Reference Standard

Midodrine Hydrochloride

CAS: 3092-17-9
Formula: C₁₂H₁₉ClN₂O₄
MW: 290.74 g/mol

VQ-034987

Reference Standard

Midodrine Hydrochloride

CAS: 43218-56-0
Formula: C₁₂H₁₉ClN₂O₄
MW: 290.74 g/mol

VQ-038394

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API Reference Standards

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