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

Isoconazole Nitrate

CAS: 24168-96-5
Formula: C₁₈H₁₅Cl₄N₃O₄
MW: 479.1 g/mol

VQ-026231

Reference Standard

Isocycloseram

CAS: 2061933-85-3
Formula: C₂₃H₁₉Cl₂F₄N₃O₄
MW: 548.3 g/mol

VQ-031255

Reference Standard

Isoflurane

CAS: 26675-46-7
Formula: C₃H₂ClF₅O
MW: 184.49 g/mol

VQ-031256

Reference Standard

Isolopinavir

CAS: 1132765-59-3
Formula: C₃₈H₅₀N₄O₅
MW: 642.8 g/mol

VQ-038116

Reference Standard

Isomalt

CAS: 64519-82-0
Formula: C₁₂H₂₄O₁₁
MW: 344.31 g/mol

VQ-031260

Reference Standard

Isomaltotriose

CAS: 3371-50-4
Formula: C₁₈H₃₂O₁₆
MW: 504.4 g/mol

VQ-041099

Reference Standard

Isomaltulose

CAS: 13718-94-0
Formula: C₁₂H₂₂O₁₁
MW: 342.3 g/mol

VQ-038946

Reference Standard

Isometamidium Chloride Hydrochloride

CAS: 6798-24-9
Formula: C₂₈H₂₇Cl₂N₇
MW: 532.5 g/mol

VQ-031261

Reference Standard

Isometheptene

CAS: 503-01-5
Formula: C₉H₁₉N
MW: 141.25 g/mol

VQ-031263

Reference Standard

Isopenicillin N

CAS: 58678-43-6
Formula: C₁₄H₂₁N₃O₆S
MW: 359.4 g/mol

VQ-041390

Reference Standard

Isopropamide Iodide

CAS: 71-81-8
Formula: C₂₃H₃₃IN₂O
MW: 480.4 g/mol

VQ-031276

Reference Standard

Isoproterenol Hydrochloride

CAS: 51-30-9
Formula: C₁₁H₁₈ClNO₃
MW: 247.72 g/mol

VQ-026239

Reference Standard

Isoproturon

CAS: 34123-59-6
Formula: C₁₂H₁₈N₂O
MW: 206.28 g/mol

VQ-039525

Reference Standard

Isopyrazam

CAS: 881685-58-1
Formula: C₂₀H₂₃F₂N₃O
MW: 359.4 g/mol

VQ-040862

Reference Standard

Isopyridoxal

CAS: 6560-46-9
Formula: C₈H₉NO₃
MW: 167.16 g/mol

VQ-041767

Reference Standard

Isosilybin

CAS: 72581-71-6
Formula: C₂₅H₂₂O₁₀
MW: 482.4 g/mol

VQ-031277

Reference Standard

Isosorbide

CAS: 652-67-5
Formula: C₆H₁₀O₄
MW: 146.14 g/mol

VQ-031279

Reference Standard

Isosulfan Blue

CAS: 68238-36-8
Formula: C₂₇H₃₁N₂NaO₆S₂
MW: 566.7 g/mol

VQ-031280

Reference Standard

Isotretinoin

CAS: 4759-48-2
Formula: C₂₀H₂₈O₂
MW: 300.4 g/mol

In stock

Reference Standard

Isoxsuprine

CAS: 395-28-8
Formula: C₁₈H₂₃NO₃
MW: 301.4 g/mol

VQ-043838

Reference Standard

Isoxsuprine Hydrochloride

CAS: 579-56-6
Formula: C₁₈H₂₄ClNO₃
MW: 337.8 g/mol

VQ-031297

Reference Standard

Isradipine

CAS: 75695-93-1
Formula: C₁₉H₂₁N₃O₅
MW: 371.4 g/mol

VQ-022880

Reference Standard

Istradefylline

CAS: 155270-99-8
Formula: C₂₀H₂₄N₄O₄
MW: 384.4 g/mol

VQ-026246

Reference Standard

Itopride

CAS: 122898-67-3
Formula: C₂₀H₂₆N₂O₄
MW: 358.4 g/mol

VQ-026247

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API Reference Standards

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