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

Prifinium Bromide

CAS: 4630-95-9
Formula: C₂₂H₂₈BrN
MW: 386.4 g/mol

VQ-041662

Reference Standard

Prilocaine

CAS: 721-50-6
Formula: C₁₃H₂₀N₂O
MW: 220.31 g/mol

VQ-033323

Reference Standard

Prilocaine Hydrochloride

CAS: 1786-81-8
Formula: C₁₃H₂₁ClN₂O
MW: 256.77 g/mol

VQ-033322

Reference Standard

Primaquine

CAS: 90-34-6
Formula: C₁₅H₂₁N₃O
MW: 259.35 g/mol

VQ-041665

Reference Standard

Primidone

CAS: 125-33-7
Formula: C₁₂H₁₄N₂O₂
MW: 218.25 g/mol

VQ-023553

Reference Standard

Primulaverin

CAS: 154-61-0
Formula: C₂₀H₂₈O₁₃
MW: 476.4 g/mol

VQ-041669

Reference Standard

Pristinamycin

CAS: 270076-60-3
Formula: C₇₁H₈₄N₁₀O₁₇
MW: 1349.5 g/mol

VQ-040472

Reference Standard

Pritelivir

CAS: 348086-71-5
Formula: C₁₈H₁₈N₄O₃S₂
MW: 402.5 g/mol

VQ-039652

Reference Standard

Probucol

CAS: 23288-49-5
Formula: C₃₁H₄₈O₂S₂
MW: 516.8 g/mol

VQ-041671

Reference Standard

Procainamide

CAS: 51-06-9
Formula: C₁₃H₂₁N₃O
MW: 235.33 g/mol

VQ-007676

Reference Standard

Procainamide Hydrochloride

CAS: 614-39-1
Formula: C₁₃H₂₂ClN₃O
MW: 271.78 g/mol

In stock

Reference Standard

Procaine Hydrochloride

CAS: 51-05-8
Formula: C₁₃H₂₁ClN₂O₂
MW: 272.77 g/mol

VQ-033332

Reference Standard

Procarbazine Hydrochloride

CAS: 366-70-1
Formula: C₁₂H₂₀ClN₃O
MW: 257.76 g/mol

VQ-041675

Reference Standard

Procaterol Hydrochloride

CAS: 62929-91-3
Formula: C₁₆H₂₃ClN₂O₃
MW: 326.82 g/mol

VQ-041676

Reference Standard

Procaterol Hydrochloride Hemihydrate

CAS: 81262-93-3
Formula: C₃₂H₄₈Cl₂N₄O₇
MW: 671.6 g/mol

VQ-039850

Reference Standard

Prochlorperazine

CAS: 58-38-8
Formula: C₂₀H₂₄ClN₃S
MW: 373.9 g/mol

VQ-027631

Reference Standard

Prochlorperazine Dimaleate

CAS: 84-02-6
Formula: C₂₈H₃₂ClN₃O₈S
MW: 606.1 g/mol

VQ-033334

Reference Standard

Prochlorperazine HCl

CAS: 60-90-2
Formula: C₂₀H₂₄ClN₃S : HCl
MW: 410.4 g/mol

VQ-044542

Reference Standard

Procyclidine Hydrochloride

CAS: 1508-76-5
Formula: C₁₉H₃₀ClNO
MW: 323.9 g/mol

VQ-041686

Reference Standard

Profenofos

CAS: 41198-08-7
Formula: C₁₁H₁₅BrClO₃PS
MW: 373.63 g/mol

VQ-038980

Reference Standard

Proguanil Hydrochloride

CAS: 637-32-1
Formula: C₁₁H₁₇Cl₂N₅
MW: 290.19 g/mol

VQ-033342

Reference Standard

Promazine Hydrochloride

CAS: 53-60-1
Formula: C₁₇H₂₁ClN₂S
MW: 320.9 g/mol

VQ-021326

Reference Standard

Promestriene

CAS: 39219-28-8
Formula: C₂₂H₃₂O₂
MW: 328.5 g/mol

VQ-030569

Reference Standard

Promethazine Hydrochloride

CAS: 58-33-3
Formula: C₁₇H₂₁ClN₂S
MW: 320.9 g/mol

VQ-041702

Need a price, a spec or a custom compound?

Send us your list — product names or CAS numbers, grade, quantity and destination. Our team replies with a formal quotation, COA and lead time.

Request a quote Contact sales

Laboratory Chemicals & Reagents View all

Solvents View all

Life Science & Biochemicals View all

APIs & Bulk Drugs View all

Impurities & Reference Standards View all

Pharma Intermediates & Building Blocks View all

Inorganic Chemicals, Metals & Advanced Materials View all

Industrial & Specialty Chemicals View all

API Reference Standards

Need a price, a spec or a custom compound?