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

(E)-Aztreonam

CAS: 99341-02-3
Formula: C₁₃H₁₇N₅O₈S₂
MW: 435.4 g/mol

VQ-023399

Reference Standard

(E)-Cefdinir

CAS: 178601-88-2
Formula: C₁₄H₁₃N₅O₅S₂
MW: 395.4 g/mol

VQ-022070

Reference Standard

(E)-Ceftibuten Dihydrate

CAS: 1428117-81-0
Formula: C₁₅H₁₄N₄O₆S₂
MW: 410.4 g/mol

VQ-024874

Reference Standard

(E)-Ceftiofur

CAS: 120882-20-4
Formula: C₁₉H₁₇N₅O₇S₃
MW: 523.6 g/mol

VQ-022113

Reference Standard

(E)-Doxepin

CAS: 3607-34-9
Formula: C₁₉H₂₁NO
MW: 279.4 g/mol

VQ-036812

Reference Standard

(E)-Doxepin Hydrochloride

CAS: 4698-39-9
Formula: C₁₉H₂₂ClNO
MW: 315.8 g/mol

VQ-030302

Reference Standard

(E)-Guggulsterone

CAS: 39025-24-6
Formula: C₂₁H₂₈O₂
MW: 312.4 g/mol

VQ-039591

Reference Standard

(E)-Olopatadine

CAS: 113806-06-7
Formula: C₂₁H₂₃NO₃
MW: 337.4 g/mol

VQ-023335

Reference Standard

(E)-Olopatadine Hydrochloride

CAS: 949141-22-4
Formula: C₂₁H₂₄ClNO₃
MW: 373.9 g/mol

VQ-032248

Reference Standard

(E)-Pralidoxime Chloride

CAS: 14018-50-9
Formula: C₇H₉ClN₂O
MW: 172.61 g/mol

VQ-033265

Reference Standard

(E/Z)-Ensifentrine

CAS: 298680-25-8
Formula: C₂₆H₃₁N₅O₄
MW: 477.6 g/mol

VQ-025541

Reference Standard

(R,R,R)-Aprepitant

CAS: 1148113-53-4
Formula: C₂₃H₂₁F₇N₄O₃
MW: 534.4 g/mol

VQ-024339

Reference Standard

(R,R,S,R)-Nebivolol

CAS: 119365-26-3
Formula: C₂₂H₂₅F₂NO₄
MW: 405.4 g/mol

VQ-026842

Reference Standard

(R,R,S,S)-Nebivolol

CAS: 1360598-84-0
Formula: C₂₂H₂₅F₂NO₄
MW: 405.4 g/mol

VQ-034873

Reference Standard

(R,R)-Diltiazem

CAS: 75472-92-3
Formula: C₂₂H₂₆N₂O₄S
MW: 414.5 g/mol

VQ-044664

Reference Standard

(R,R)-Eluxadoline

CAS: 1052250-94-8
Formula: C₃₂H₃₅N₅O₅
MW: 569.6 g/mol

VQ-035325

Reference Standard

(R,R)-Labetalol

CAS: 75659-07-3
Formula: C₁₉H₂₄N₂O₃
MW: 328.4 g/mol

VQ-028832

Reference Standard

(R,R)-Pitavastatin

CAS: 769908-13-6
Formula: C₂₅H₂₄FNO₄
MW: 421.5 g/mol

VQ-033234

Reference Standard

(R,S,R,S)-Nebivolol

CAS: 119365-24-1
Formula: C₂₂H₂₅F₂NO₄
MW: 405.4 g/mol

VQ-032082

Reference Standard

(R,S,S,S)-Nebivolol Hydrochloride

CAS: 920299-33-8
Formula: C₂₂H₂₆ClF₂NO₄
MW: 441.9 g/mol

VQ-032083

Reference Standard

(R,S,S,S)-Orlistat

CAS: 104872-28-8
Formula: C₂₉H₅₃NO₅
MW: 495.7 g/mol

VQ-027037

Reference Standard

(R,S)-Labetalol

CAS: 83167-31-1
Formula: C₁₉H₂₄N₂O₃
MW: 328.4 g/mol

VQ-026327

Reference Standard

(R,S)(S,R)-Benidipine Hydrochloride

CAS: 91599-76-7
Formula: C₂₈H₃₂ClN₃O₆
MW: 542 g/mol

VQ-029386

Reference Standard

(R)-(-)-Citronellyl bromide

CAS: 10340-84-8
Formula: C₁₀H₁₉Br
MW: 219.16 g/mol

VQ-040978

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API Reference Standards

Need a price, a spec or a custom compound?