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

Omeprazole Magnesium

CAS: 95382-33-5
Formula: C₃₄H₃₆MgN₆O₆S₂
MW: 713.1 g/mol

VQ-038759

Reference Standard

Omeprazole WS

CAS: 73590-58-6
Formula: C₁₇H₁₉N₃O₃S
MW: 345.4 g/mol

In stock

Reference Standard

Omethoate

CAS: 1113-02-6
Formula: C₅H₁₂NO₄PS
MW: 213.19 g/mol

VQ-032825

Reference Standard

Ondansetron

CAS: 99614-02-5
Formula: C₁₈H₁₉N₃O
MW: 293.4 g/mol

In stock

Reference Standard

Ondansetron Hydrochloride

CAS: 99614-01-4
Formula: C₁₈H₂₀ClN₃O
MW: 329.8 g/mol

VQ-038773

Reference Standard

Opicapone

CAS: 923287-50-7
Formula: C₁₅H₁₀Cl₂N₄O₆
MW: 413.2 g/mol

VQ-027023

Reference Standard

Opipramol

CAS: 315-72-0
Formula: C₂₃H₂₉N₃O
MW: 363.5 g/mol

VQ-045173

Reference Standard

Opipramol Dihydrochloride

CAS: 909-39-7
Formula: C₂₃H₃₁Cl₂N₃O
MW: 436.4 g/mol

VQ-038780

Reference Standard

Orbifloxacin

CAS: 113617-63-3
Formula: C₁₉H₂₀F₃N₃O₃
MW: 395.4 g/mol

VQ-023342

Reference Standard

Orciprenaline

CAS: 586-06-1
Formula: C₁₁H₁₇NO₃
MW: 211.26 g/mol

VQ-044413

Reference Standard

Orciprenaline Sulfate

CAS: 5874-97-5
Formula: C₂₂H₃₆N₂O₁₀S
MW: 520.6 g/mol

VQ-032275

Reference Standard

Orforglipron

CAS: 2212020-52-3
Formula: C₄₈H₄₈F₂N₁₀O₅
MW: 883 g/mol

In stock

Reference Standard

Orientin

CAS: 28608-75-5
Formula: C₂₁H₂₀O₁₁
MW: 448.4 g/mol

VQ-032563

Reference Standard

Ormeloxifene

CAS: 31477-60-8
Formula: C₃₀H₃₅NO₃
MW: 457.6 g/mol

VQ-043245

Reference Standard

Ormeloxifene

CAS: 78994-24-8
Formula: C₃₀H₃₅NO₃
MW: 457.6 g/mol

VQ-049337

Reference Standard

Ormeloxifene Hydrochloride

CAS: 51023-56-4
Formula: C₃₀H₃₆ClNO₃
MW: 494.1 g/mol

VQ-032284

Reference Standard

Orphenadrine Citrate

CAS: 4682-36-4
Formula: C₂₄H₃₁NO₈
MW: 461.5 g/mol

In stock

Reference Standard

Orphenadrine Hydrochloride

CAS: 341-69-5
Formula: C₁₈H₂₄ClNO
MW: 305.8 g/mol

In stock

Reference Standard

Orphenadrine WS

CAS: 83-98-7
Formula: C₁₈H₂₃NO
MW: 269.4 g/mol

VQ-007634

Reference Standard

Oseltamivir

CAS: 196618-13-0
Formula: C₁₆H₂₈N₂O₄
MW: 312.4 g/mol

VQ-007635

Reference Standard

Oseltamivir Hydrochloride

CAS: 204255-09-4
Formula: C₁₆H₂₉ClN₂O₄
MW: 348.9 g/mol

VQ-049347

Reference Standard

Oseltamivir Phosphate

CAS: 204255-11-8
Formula: C₁₆H₃₁N₂O₈P
MW: 410.4 g/mol

In stock

Reference Standard

Osilodrostat

CAS: 928134-65-0
Formula: C₁₃H₁₀FN₃
MW: 227.24 g/mol

VQ-027055

Reference Standard

Osilodrostat Phosphate

CAS: 1315449-72-9
Formula: C₁₃H₁₃FN₃O₄P
MW: 325.23 g/mol

VQ-049357

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API Reference Standards

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