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

Paramethasone Acetate

CAS: 1597-82-6
Formula: C₂₄H₃₁FO₆
MW: 434.5 g/mol

VQ-041337

Reference Standard

Parecoxib

CAS: 198470-84-7
Formula: C₁₉H₁₈N₂O₄S
MW: 370.4 g/mol

VQ-027390

Reference Standard

Parecoxib Sodium

CAS: 198470-85-8
Formula: C₁₉H₁₇N₂NaO₄S
MW: 392.4 g/mol

VQ-033065

Reference Standard

Paricalcitol

CAS: 131918-61-1
Formula: C₂₇H₄₄O₃
MW: 416.6 g/mol

VQ-033069

Reference Standard

Paromomycin

CAS: 7542-37-2
Formula: C₂₃H₄₅N₅O₁₄
MW: 615.6 g/mol

VQ-026866

Reference Standard

Paroxetine hydrochloride

CAS: 78246-49-8
Formula: C₁₉H₂₁ClFNO₃
MW: 365.8 g/mol

VQ-027394

Reference Standard

Paroxetine Hydrochloride Hemihydrate

CAS: 110429-35-1
Formula: C₃₈H₄₄Cl₂F₂N₂O₇
MW: 749.7 g/mol

VQ-041342

Reference Standard

Paroxetine Maleate

CAS: 64006-44-6
Formula: C₂₃H₂₄FNO₇
MW: 445.4 g/mol

VQ-041356

Reference Standard

Paroxetine mesylate

CAS: 217797-14-3
Formula: C₂₀H₂₄FNO₆S
MW: 425.5 g/mol

VQ-041343

Reference Standard

Parthenolide

CAS: 20554-84-1
Formula: C₁₅H₂₀O₃
MW: 248.32 g/mol

VQ-043467

Reference Standard

Patulin

CAS: 149-29-1
Formula: C₇H₆O₄
MW: 154.12 g/mol

VQ-038998

Reference Standard

Pazopanib

CAS: 444731-52-6
Formula: C₂₁H₂₃N₇O₂S
MW: 437.5 g/mol

VQ-007644

Reference Standard

Pazopanib Hydrochloride

CAS: 635702-64-6
Formula: C₂₁H₂₄ClN₇O₂S
MW: 474 g/mol

In stock

Reference Standard

Pazufloxacin mesylate

CAS: 163680-77-1
Formula: C₁₇H₁₉FN₂O₇S
MW: 414.4 g/mol

VQ-041368

Reference Standard

Peficitinib

CAS: 944118-01-8
Formula: C₁₈H₂₂N₄O₂
MW: 326.4 g/mol

VQ-041369

Reference Standard

Peficitinib Hydrobromide

CAS: 1353219-05-2
Formula: C₁₈H₂₃BrN₄O₂
MW: 407.3 g/mol

VQ-040749

Reference Standard

Pefloxacin Mesylate Dihydrate

CAS: 149676-40-4
Formula: C₁₈H₂₈FN₃O₈S
MW: 465.5 g/mol

VQ-033083

Reference Standard

Pelitinib

CAS: 257933-82-7
Formula: C₂₄H₂₃ClFN₅O₂
MW: 467.9 g/mol

VQ-043763

Reference Standard

Pelubiprofen

CAS: 69956-77-0
Formula: C₁₆H₁₈O₃
MW: 258.31 g/mol

VQ-033084

Reference Standard

Pemafibrate

CAS: 848259-27-8
Formula: C₂₈H₃₀N₂O₆
MW: 490.5 g/mol

VQ-027409

Reference Standard

Pembrolizumab

CAS: 1374853-91-4
Formula: C₂₉₂H₄₄₂N₇₈O₈₆S₃
MW: 6517.3 g/mol

VQ-033087

Reference Standard

Pemetrexed

CAS: 137281-23-3
Formula: C₂₀H₂₁N₅O₆
MW: 427.4 g/mol

VQ-007646

Reference Standard

Pemetrexed Disodium

CAS: 150399-23-8
Formula: C₂₀H₁₉N₅Na₂O₆
MW: 471.4 g/mol

In stock

Reference Standard

Pemetrexed disodium heptahydrate

CAS: 357166-29-1
Formula: C₂₀H₃₃N₅Na₂O₁₃
MW: 597.5 g/mol

VQ-033088

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API Reference Standards

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