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

Promethazine Teoclate

CAS: 17693-51-5
Formula: C₂₄H₂₇ClN₆O₂S
MW: 499 g/mol

VQ-041705

Reference Standard

Propafenone

CAS: 54063-53-5
Formula: C₂₁H₂₇NO₃
MW: 341.4 g/mol

VQ-027654

Reference Standard

Propafenone Hydrochloride

CAS: 34183-22-7
Formula: C₂₁H₂₈ClNO₃
MW: 377.9 g/mol

VQ-033356

Reference Standard

Propamocarb

CAS: 24579-73-5
Formula: C₉H₂₀N₂O₂
MW: 188.27 g/mol

VQ-040868

Reference Standard

Propantheline

CAS: 298-50-0
Formula: C₂₃H₃₀NO₃⁺
MW: 368.5 g/mol

VQ-007678

Reference Standard

Propantheline Bromide WS

CAS: 50-34-0
Formula: C₂₃H₃₀BrNO₃
MW: 448.4 g/mol

In stock

Reference Standard

Propaquizafop

CAS: 111479-05-1
Formula: C₂₂H₂₂ClN₃O₅
MW: 443.9 g/mol

VQ-041719

Reference Standard

Proparacaine Hydrochloride

CAS: 5875-06-9
Formula: C₁₆H₂₇ClN₂O₃
MW: 330.8 g/mol

VQ-041720

Reference Standard

Propargite

CAS: 2312-35-8
Formula: C₁₉H₂₆O₄S
MW: 350.5 g/mol

VQ-041724

Reference Standard

Propentofylline

CAS: 55242-55-2
Formula: C₁₅H₂₂N₄O₃
MW: 306.36 g/mol

VQ-033363

Reference Standard

Propiconazole

CAS: 60207-90-1
Formula: C₁₅H₁₇Cl₂N₃O₂
MW: 342.2 g/mol

VQ-033364

Reference Standard

Propineb

CAS: 12071-83-9
Formula: C₅H₈N₂S₄Zn
MW: 289.8 g/mol

VQ-038858

Reference Standard

Propiomazine

CAS: 362-29-8
Formula: C₂₀H₂₄N₂OS
MW: 340.5 g/mol

VQ-041726

Reference Standard

Propiomazine Maleate

CAS: 3568-23-8
Formula: C₂₄H₂₈N₂O₅S
MW: 456.6 g/mol

VQ-033368

Reference Standard

Propiverine Hydrochloride

CAS: 54556-98-8
Formula: C₂₃H₃₀ClNO₃
MW: 403.9 g/mol

VQ-033369

Reference Standard

Propofol

CAS: 2078-54-8
Formula: C₁₂H₁₈O
MW: 178.27 g/mol

VQ-027660

Reference Standard

Propoxur

CAS: 114-26-1
Formula: C₁₁H₁₅NO₃
MW: 209.24 g/mol

VQ-032457

Reference Standard

Propranolol

CAS: 525-66-6
Formula: C₁₆H₂₁NO₂
MW: 259.34 g/mol

VQ-007680

Reference Standard

Propranolol Hydrochloride

CAS: 318-98-9
Formula: C₁₆H₂₂ClNO₂
MW: 295.8 g/mol

In stock

Reference Standard

Propylene Glycol

CAS: 57-55-6
Formula: C₃H₈O₂
MW: 76.09 g/mol

In stock

Reference Standard

Propyzamide

CAS: 23950-58-5
Formula: C₁₂H₁₁Cl₂NO
MW: 256.12 g/mol

VQ-041706

Reference Standard

Prothioconazole

CAS: 178928-70-6
Formula: C₁₄H₁₅Cl₂N₃OS
MW: 344.3 g/mol

VQ-032945

Reference Standard

Prototribestin

CAS: 425407-43-8
Formula: C₄₅H₇₃NaO₂₁S
MW: 1005.1 g/mol

VQ-040517

Reference Standard

Protriptyline Hydrochloride

CAS: 1225-55-4
Formula: C₁₉H₂₂ClN
MW: 299.8 g/mol

VQ-037682

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API Reference Standards

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