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

Fenoprofen

CAS: 29679-58-1
Formula: C₁₅H₁₄O₃
MW: 242.27 g/mol

VQ-048358

Reference Standard

Fenoprofen Calcium Dihydrate

CAS: 71720-56-4
Formula: C₃₀H₃₀CaO₈
MW: 558.6 g/mol

VQ-037231

Reference Standard

Fenoprofen Sodium Salt Dihydrate

CAS: 66424-46-2
Formula: C₁₅H₁₇NaO₅
MW: 300.28 g/mol

VQ-037232

Reference Standard

Fenoterol Hydrobromide

CAS: 1944-12-3
Formula: C₁₇H₂₂BrNO₄
MW: 384.3 g/mol

VQ-030699

Reference Standard

Fenoverine

CAS: 37561-27-6
Formula: C₂₆H₂₅N₃O₃S
MW: 459.6 g/mol

VQ-030705

Reference Standard

Fenoxaprop

CAS: 95617-09-7
Formula: C₁₆H₁₂ClNO₅
MW: 333.72 g/mol

VQ-030706

Reference Standard

Fenpiverinium Bromide

CAS: 125-60-0
Formula: C₂₂H₂₉BrN₂O
MW: 417.4 g/mol

VQ-030708

Reference Standard

Fenpyroximate

CAS: 111812-58-9
Formula: C₂₄H₂₇N₃O₄
MW: 421.5 g/mol

VQ-030710

Reference Standard

Fenretinide

CAS: 65646-68-6
Formula: C₂₆H₃₃NO₂
MW: 391.5 g/mol

VQ-037235

Reference Standard

Fenspiride Hydrochloride

CAS: 5053-08-7
Formula: C₁₅H₂₁ClN₂O₂
MW: 296.79 g/mol

VQ-037236

Reference Standard

Fenvalerate

CAS: 51630-58-1
Formula: C₂₅H₂₂ClNO₃
MW: 419.9 g/mol

VQ-032352

Reference Standard

Ferric Maltol

CAS: 33725-54-1
Formula: C₁₈H₁₅FeO₉
MW: 431.2 g/mol

VQ-030714

Reference Standard

Ferrous Gluconate Hydrate

CAS: 699014-53-4
Formula: C₁₂H₂₆FeO₁₅
MW: 466.17 g/mol

VQ-019766

Reference Standard

Fesoterodine

CAS: 286930-02-7
Formula: C₂₆H₃₇NO₃
MW: 411.6 g/mol

In stock

Reference Standard

Fesoterodine Fumarate

CAS: 286930-03-8
Formula: C₃₀H₄₁NO₇
MW: 527.6 g/mol

In stock

Reference Standard

Fexofenadine Hydrochloride

CAS: 153439-40-8
Formula: C₃₂H₄₀ClNO₄
MW: 538.1 g/mol

VQ-007478

Reference Standard

Fexofenadine WS

CAS: 83799-24-0
Formula: C₃₂H₃₉NO₄
MW: 501.7 g/mol

In stock

Reference Standard

Fezolinetant

CAS: 1629229-37-3
Formula: C₁₆H₁₅FN₆OS
MW: 358.4 g/mol

VQ-025773

Reference Standard

Fidaxomicin

CAS: 873857-62-6
Formula: C₅₂H₇₄Cl₂O₁₈
MW: 1058 g/mol

VQ-030726

Reference Standard

Filgotinib

CAS: 1206161-97-8
Formula: C₂₁H₂₃N₅O₃S
MW: 425.5 g/mol

VQ-037261

Reference Standard

Filgotinib Maleate

CAS: 1802998-75-9
Formula: C₂₅H₂₇N₅O₇S
MW: 541.6 g/mol

VQ-030729

Reference Standard

Fimasartan

CAS: 247257-48-3
Formula: C₂₇H₃₁N₇OS
MW: 501.6 g/mol

VQ-030731

Reference Standard

Fimasartan Potassium Trihydrate

CAS: 1020110-23-9
Formula: C₂₇H₃₆KN₇O₄S
MW: 593.8 g/mol

VQ-037263

Reference Standard

Finerenone

CAS: 1050477-31-0
Formula: C₂₁H₂₂N₄O₃
MW: 378.4 g/mol

VQ-022646

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API Reference Standards

Need a price, a spec or a custom compound?