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

Ertapenem sodium

CAS: 153773-82-1
Formula: C₂₂H₂₄N₃NaO₇S
MW: 497.5 g/mol

VQ-037058

Reference Standard

Ertugliflozin

CAS: 1210344-57-2
Formula: C₂₂H₂₅ClO₇
MW: 436.9 g/mol

VQ-025592

Reference Standard

Erucamide

CAS: 112-84-5
Formula: C₂₂H₄₃NO
MW: 337.6 g/mol

VQ-032335

Reference Standard

Erucifoline

CAS: 40158-95-0
Formula: C₁₈H₂₃NO₆
MW: 349.4 g/mol

VQ-030537

Reference Standard

Erythromycin

CAS: 114-07-8
Formula: C₃₇H₆₇NO₁₃
MW: 733.9 g/mol

In stock

Reference Standard

Erythromycin propionate

CAS: 134-36-1
Formula: C₄₀H₇₁NO₁₄
MW: 790 g/mol

VQ-037075

Reference Standard

Erythromycin Thiocyanate

CAS: 7704-67-8
Formula: C₃₈H₆₈N₂O₁₃S
MW: 793 g/mol

VQ-037068

Reference Standard

Esaxerenone

CAS: 1632006-28-0
Formula: C₂₂H₂₁F₃N₂O₄S
MW: 466.5 g/mol

VQ-025607

Reference Standard

Escin (mixture of natural saponins)

CAS: 6805-41-0
Formula: C₁₁₀H₁₇₂O₄₈
MW: 2262.5 g/mol

VQ-027089

Reference Standard

Eserine hemisulfate salt

CAS: 64-47-1
Formula: C₃₀H₄₄N₆O₈S
MW: 648.8 g/mol

VQ-041463

Reference Standard

Esfenvalerate

CAS: 66230-04-4
Formula: C₂₅H₂₂ClNO₃
MW: 419.9 g/mol

VQ-039321

Reference Standard

Eslicarbazepine

CAS: 104746-04-5
Formula: C₁₅H₁₄N₂O₂
MW: 254.28 g/mol

In stock

Reference Standard

Eslicarbazepine Acetate

CAS: 236395-14-5
Formula: C₁₇H₁₆N₂O₃
MW: 296.32 g/mol

In stock

Reference Standard

Esmolol

CAS: 81147-92-4
Formula: C₁₆H₂₅NO₄
MW: 295.37 g/mol

VQ-044209

Reference Standard

Esmolol Hydrochloride

CAS: 81161-17-3
Formula: C₁₆H₂₆ClNO₄
MW: 331.8 g/mol

VQ-025610

Reference Standard

Esomeprazole Magnesium

CAS: 161973-10-0
Formula: C₃₄H₃₆MgN₆O₆S₂
MW: 713.1 g/mol

VQ-007470

Reference Standard

Esomeprazole magnesium dihydrate

CAS: 217087-10-0
Formula: C₃₄H₄₀MgN₆O₈S₂
MW: 749.2 g/mol

VQ-030558

Reference Standard

Esomeprazole Magnesium Trihydrate

CAS: 217087-09-7
Formula: C₃₄H₄₂MgN₆O₉S₂
MW: 767.2 g/mol

In stock

Reference Standard

Esomeprazole sodium

CAS: 161796-78-7
Formula: C₁₇H₁₈N₃NaO₃S
MW: 367.4 g/mol

VQ-025613

Reference Standard

Estetrol

CAS: 15183-37-6
Formula: C₁₈H₂₄O₄
MW: 304.4 g/mol

VQ-025626

Reference Standard

Estetrol Monohydrate

CAS: 2055649-81-3
Formula: C₁₈H₂₆O₅
MW: 322.4 g/mol

VQ-030573

Reference Standard

Estradiol Acetate

CAS: 4245-41-4
Formula: C₂₀H₂₆O₃
MW: 314.4 g/mol

VQ-030570

Reference Standard

Estradiol Benzoate

CAS: 50-50-0
Formula: C₂₅H₂₈O₃
MW: 376.5 g/mol

VQ-030565

Reference Standard

Estradiol Cypionate

CAS: 313-06-4
Formula: C₂₆H₃₆O₃
MW: 396.6 g/mol

VQ-030600

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API Reference Standards

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