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

Nonoxynol 9

CAS: 14409-72-4
Formula: C₃₃H₆₀O₁₀
MW: 616.8 g/mol

VQ-040238

Reference Standard

Noopept

CAS: 157115-85-0
Formula: C₁₇H₂₂N₂O₄
MW: 318.4 g/mol

VQ-039976

Reference Standard

Nordazepem

CAS: 1088-11-5
Formula: C₁₅H₁₁ClN₂O
MW: 270.71 g/mol

In stock

Reference Standard

Nordihydro Guaiaretic Acid (mixture of diastereomers)

CAS: 500-38-9
Formula: C₁₈H₂₂O₄
MW: 302.4 g/mol

VQ-038690

Reference Standard

Norethindrone acetate

CAS: 51-98-9
Formula: C₂₂H₂₈O₃
MW: 340.5 g/mol

VQ-023279

Reference Standard

Norethisterone Enanthate

CAS: 3836-23-5
Formula: C₂₇H₃₈O₃
MW: 410.6 g/mol

VQ-026953

Reference Standard

Norfluoxetine Hydrochloride

CAS: 57226-68-3
Formula: C₁₆H₁₇ClF₃NO
MW: 331.76 g/mol

VQ-030804

Reference Standard

Norfluoxetine Oxalate

CAS: 107674-50-0
Formula: C₁₈H₁₈F₃NO₅
MW: 385.3 g/mol

VQ-043848

Reference Standard

Norgestimate

CAS: 35189-28-7
Formula: C₂₃H₃₁NO₃
MW: 369.5 g/mol

VQ-023302

Reference Standard

Norgestrel

CAS: 6533-00-2
Formula: C₂₁H₂₈O₂
MW: 312.4 g/mol

VQ-023304

Reference Standard

Nortriptyline Hydrochloride

CAS: 894-71-3
Formula: C₁₉H₂₂ClN
MW: 299.8 g/mol

VQ-023305

Reference Standard

Nortropine

CAS: 538-09-0
Formula: C₇H₁₃NO
MW: 127.18 g/mol

VQ-024430

Reference Standard

Nortropinone

CAS: 5632-84-8
Formula: C₇H₁₁NO
MW: 125.17 g/mol

In stock

Reference Standard

Nortropinone Hydrochloride

CAS: 25602-68-0
Formula: C₇H₁₂ClNO
MW: 161.63 g/mol

In stock

Reference Standard

Nosiheptide

CAS: 56377-79-8
Formula: C₅₁H₄₃N₁₃O₁₂S₆
MW: 1222.4 g/mol

VQ-038701

Reference Standard

Novobiocin

CAS: 303-81-1
Formula: C₃₁H₃₆N₂O₁₁
MW: 612.6 g/mol

VQ-038702

Reference Standard

Novobiocin Sodium

CAS: 1476-53-5
Formula: C₃₁H₃₅N₂NaO₁₁
MW: 634.6 g/mol

VQ-032220

Reference Standard

Novoldiamine

CAS: 140-80-7
Formula: C₉H₂₂N₂
MW: 158.28 g/mol

VQ-038703

Reference Standard

Nystatin A1

CAS: 34786-70-4
Formula: C₄₇H₇₅NO₁₇
MW: 926.1 g/mol

VQ-049277

Reference Standard

Obeticholic Acid WS

CAS: 459789-99-2
Formula: C₂₆H₄₄O₄
MW: 420.6 g/mol

In stock

Reference Standard

Obidoxime Chloride

CAS: 114-90-9
Formula: C₁₄H₁₆ClN₄O₃⁺
MW: 323.75 g/mol

VQ-038709

Reference Standard

Ochratoxin A

CAS: 303-47-9
Formula: C₂₀H₁₈ClNO₆
MW: 403.8 g/mol

VQ-038710

Reference Standard

Oclacitinib

CAS: 1208319-26-9
Formula: C₁₅H₂₃N₅O₂S
MW: 337.4 g/mol

VQ-038711

Reference Standard

Oclacitinib Maleate

CAS: 1208319-27-0
Formula: C₁₉H₂₇N₅O₆S
MW: 453.5 g/mol

VQ-038713

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API Reference Standards

Need a price, a spec or a custom compound?