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

Mercaptopurine

CAS: 50-44-2
Formula: C₅H₄N₄S
MW: 152.18 g/mol

VQ-026610

Reference Standard

Meropenem

CAS: 96036-03-2
Formula: C₁₇H₂₅N₃O₅S
MW: 383.5 g/mol

VQ-031791

Reference Standard

Meropenem sodium

CAS: 211238-34-5
Formula: C₁₇H₂₄N₃NaO₅S
MW: 405.4 g/mol

VQ-043636

Reference Standard

Mertansine

CAS: 139504-50-0
Formula: C₃₅H₄₈ClN₃O₁₀S
MW: 738.3 g/mol

VQ-026612

Reference Standard

Mesalazine Hydrochloride

CAS: 6291-36-7
Formula: C₇H₈ClNO₃
MW: 189.59 g/mol

VQ-007571

Reference Standard

Mesalazine Sodium

CAS: 35589-28-7
Formula: C₇H₆NNaO₃
MW: 175.12 g/mol

VQ-007572

Reference Standard

Mesalazine WS

CAS: 89-57-6
Formula: C₇H₇NO₃
MW: 153.14 g/mol

In stock

Reference Standard

Mesembrenol

CAS: 25516-15-8
Formula: C₁₇H₂₃NO₃
MW: 289.4 g/mol

VQ-038325

Reference Standard

Mesembrine

CAS: 24880-43-1
Formula: C₁₇H₂₃NO₃
MW: 289.4 g/mol

VQ-038323

Reference Standard

Mesna

CAS: 19767-45-4
Formula: C₂H₅NaO₃S₂
MW: 164.18 g/mol

VQ-031800

Reference Standard

Mesotrione

CAS: 104206-82-8
Formula: C₁₄H₁₃NO₇S
MW: 339.32 g/mol

VQ-031802

Reference Standard

Mesterolone

CAS: 1424-00-6
Formula: C₂₀H₃₂O₂
MW: 304.5 g/mol

VQ-043602

Reference Standard

Mestranol

CAS: 72-33-3
Formula: C₂₁H₂₆O₂
MW: 310.4 g/mol

VQ-043548

Reference Standard

Mesuol

CAS: 16981-20-7
Formula: C₂₄H₂₄O₅
MW: 392.4 g/mol

VQ-040496

Reference Standard

Metadoxine

CAS: 74536-44-0
Formula: C₁₃H₁₈N₂O₆
MW: 298.29 g/mol

VQ-039797

Reference Standard

Metaflumizone

CAS: 139968-49-3
Formula: C₂₄H₁₆F₆N₄O₂
MW: 506.4 g/mol

VQ-038329

Reference Standard

Metalaxyl

CAS: 57837-19-1
Formula: C₁₅H₂₁NO₄
MW: 279.33 g/mol

VQ-038330

Reference Standard

Metamizole Magnesium Salt

CAS: 63372-86-1
Formula: C₂₆H₃₂MgN₆O₈S₂
MW: 645 g/mol

VQ-031809

Reference Standard

Metamizole Sodium

CAS: 68-89-3
Formula: C₁₃H₁₆N₃NaO₄S
MW: 333.34 g/mol

VQ-031806

Reference Standard

Metamizole Sodium Monohydrate

CAS: 5907-38-0
Formula: C₁₃H₁₈N₃NaO₅S
MW: 351.36 g/mol

VQ-031805

Reference Standard

Metanephrine

CAS: 5001-33-2
Formula: C₁₀H₁₅NO₃
MW: 197.23 g/mol

VQ-035618

Reference Standard

Metaraminol Bitartrate

CAS: 33402-03-8
Formula: C₁₃H₁₉NO₈
MW: 317.29 g/mol

VQ-038334

Reference Standard

Metazachlor

CAS: 67129-08-2
Formula: C₁₄H₁₆ClN₃O
MW: 277.75 g/mol

VQ-038339

Reference Standard

Metconazole

CAS: 125116-23-6
Formula: C₁₇H₂₂ClN₃O
MW: 319.8 g/mol

VQ-031711

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API Reference Standards

Need a price, a spec or a custom compound?