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

Entacapone Sodium Salt

CAS: 1047659-02-8
Formula: C₁₄H₁₄N₃NaO₅
MW: 327.27 g/mol

VQ-007457

Reference Standard

Entacapone WS

CAS: 130929-57-6
Formula: C₁₄H₁₅N₃O₅
MW: 305.29 g/mol

In stock

Reference Standard

Entanercept

CAS: 185243-69-0
Formula: C₂₂₂₄H₃₄₇₅N₆₂₁O₆
MW: 51235.07 g/mol

VQ-048283

Reference Standard

Entecavir

CAS: 142217-69-4
Formula: C₁₂H₁₅N₅O₃
MW: 277.28 g/mol

VQ-030490

Reference Standard

Entecavir Monohydrate

CAS: 209216-23-9
Formula: C₁₂H₁₇N₅O₄
MW: 295.29 g/mol

VQ-022536

Reference Standard

Enterodiol

CAS: 77756-22-0
Formula: C₁₈H₂₂O₄
MW: 302.4 g/mol

VQ-048220

Reference Standard

Enterokinase

CAS: 9014-74-8

VQ-048221

Reference Standard

Enzalutamide

CAS: 915087-33-1
Formula: C₂₁H₁₆F₄N₄O₂S
MW: 464.4 g/mol

In stock

Reference Standard

Enzalutamide Hydrate

CAS: 2180932-79-8
Formula: C₂₁H₁₆F₄N₄O₂S.1/2H₂O
MW: 473.45 g/mol

In stock

Reference Standard

Epalrestat

CAS: 82159-09-9
Formula: C₁₅H₁₃NO₃S₂
MW: 319.4 g/mol

VQ-025553

Reference Standard

Ephedrone

CAS: 5650-44-2
Formula: C₁₀H₁₃NO
MW: 163.22 g/mol

VQ-007461

Reference Standard

Ephedrone Hydrochloride

CAS: 49656-78-2
Formula: C₁₀H₁₄ClNO
MW: 199.68 g/mol

In stock

Reference Standard

Epiandrosterone

CAS: 481-29-8
Formula: C₁₉H₃₀O₂
MW: 290.4 g/mol

VQ-037025

Reference Standard

Epichlorohydrin

CAS: 106-89-8
Formula: C₃H₅ClO
MW: 92.52 g/mol

In stock

Reference Standard

Epiisopiloturine

CAS: 69460-80-6
Formula: C₁₆H₁₈N₂O₃
MW: 286.33 g/mol

VQ-030509

Reference Standard

Epinastine

CAS: 80012-43-7
Formula: C₁₆H₁₅N₃
MW: 249.31 g/mol

VQ-037028

Reference Standard

Epinastine Hydrochloride

CAS: 108929-04-0
Formula: C₁₆H₁₆ClN₃
MW: 285.77 g/mol

VQ-022544

Reference Standard

Epinephrine Sulfate

CAS: 21093-18-5
Formula: C₉H₁₃NO₆S
MW: 263.27 g/mol

VQ-024148

Reference Standard

Epirubicin

CAS: 56420-45-2
Formula: C₂₇H₂₉NO₁₁
MW: 543.5 g/mol

VQ-030510

Reference Standard

Epirubicin Hydrochloride

CAS: 56390-09-1
Formula: C₂₇H₃₀ClNO₁₁
MW: 580 g/mol

VQ-025560

Reference Standard

Epitalon

CAS: 307297-39-8
Formula: C₁₄H₂₂N₄O₉
MW: 390.35 g/mol

VQ-032948

Reference Standard

Eplerenone

CAS: 107724-20-9
Formula: C₂₄H₃₀O₆
MW: 414.5 g/mol

VQ-025562

Reference Standard

Eplivanserin

CAS: 130579-75-8
Formula: C₁₉H₂₁FN₂O₂
MW: 328.4 g/mol

VQ-048236

Reference Standard

Epoprostenol Sodium

CAS: 61849-14-7
Formula: C₂₀H₃₁NaO₅
MW: 374.4 g/mol

VQ-037030

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API Reference Standards

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