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

(Z)-Pitavastatin

CAS: 1159631-31-8
Formula: C₂₅H₂₄FNO₄
MW: 421.5 g/mol

VQ-045045

Reference Standard

(Z)-Pitavastatin Calcium Salt

CAS: 1159588-21-2
Formula: C₅₀H₄₆CaF₂N₂O₈
MW: 881 g/mol

VQ-033226

Reference Standard

(Z)-Pralidoxime Chloride

CAS: 13698-37-8
Formula: C₇H₉ClN₂O
MW: 172.61 g/mol

VQ-027565

Reference Standard

(Z)-Rilpivirine Hydrochloride

CAS: 1502822-82-3
Formula: C₂₂H₁₉ClN₆
MW: 402.9 g/mol

VQ-041909

Reference Standard

1-Kestose

CAS: 470-69-9
Formula: C₁₈H₃₂O₁₆
MW: 504.4 g/mol

VQ-039107

Reference Standard

1-Phenyl-1,2-propanediol

CAS: 1855-09-0
Formula: C₉H₁₂O₂
MW: 152.19 g/mol

VQ-039784

Reference Standard

1-Phthalazinone

CAS: 20055-18-9
Formula: C₈H₆N₂O
MW: 146.15 g/mol

VQ-031075

Reference Standard

1-Stearoyl-rac-glycerol

CAS: 123-94-4
Formula: C₂₁H₄₂O₄
MW: 358.6 g/mol

VQ-037542

Reference Standard

1,2,4,5-Tetrachloro-3-nitrobenzene

CAS: 117-18-0
Formula: C₆HCl₄NO₂
MW: 260.9 g/mol

VQ-040872

Reference Standard

17-(Acetyloxy)-19-norpregn-4-en-20-yn-3-one

CAS: 38673-38-0
Formula: C₂₂H₂₈O₃
MW: 340.5 g/mol

VQ-038691

Reference Standard

2-Aminoethanesulfonamide

CAS: 4378-70-5
Formula: C₂H₈N₂O₂S
MW: 124.17 g/mol

VQ-041010

Reference Standard

2-Butynoic acid

CAS: 590-93-2
Formula: C₄H₄O₂
MW: 84.07 g/mol

VQ-031845

Reference Standard

2-Ethyl-6-methyl-3-pyridinol hydrochloride

CAS: 13258-59-8
Formula: C₈H₁₂ClNO
MW: 173.64 g/mol

VQ-036967

Reference Standard

3-Ethyl-4-methyl-2-oxopyrroline

CAS: 766-36-9
Formula: C₇H₁₁NO
MW: 125.17 g/mol

VQ-037473

Reference Standard

3,5-Dihydroxy-4-isopropylstilbene

CAS: 115781-08-3
Formula: C₁₇H₁₈O₂
MW: 254.32 g/mol

VQ-039681

Reference Standard

5-Methoxyindole-3-acetic acid

CAS: 3471-31-6
Formula: C₁₁H₁₁NO₃
MW: 205.21 g/mol

VQ-040834

Reference Standard

5-Nitro-8-hydroxyquinoline

CAS: 4008-48-4
Formula: C₉H₆N₂O₃
MW: 190.16 g/mol

VQ-038676

Reference Standard

Abacavir

CAS: 136470-78-5
Formula: C₁₄H₁₈N₆O
MW: 286.33 g/mol

In stock

Reference Standard

Abaloparatide

CAS: 247062-33-5
Formula: C₁₇₄H₃₀₀N₅₆O₄₉
MW: 3961 g/mol

VQ-035565

Reference Standard

Abametapir

CAS: 1762-34-1
Formula: C₁₂H₁₂N₂
MW: 184.24 g/mol

VQ-035313

Reference Standard

Abemaciclib

CAS: 1231929-97-7
Formula: C₂₇H₃₂F₂N₈
MW: 506.6 g/mol

In stock

Reference Standard

Abemaciclib mesylate

CAS: 1231930-82-7
Formula: C₂₈H₃₆F₂N₈O₃S
MW: 602.7 g/mol

VQ-035566

Reference Standard

Abeprazan hydrochloride

CAS: 1902954-87-3
Formula: C₁₉H₁₈ClF₃N₂O₃S
MW: 446.9 g/mol

VQ-030723

Reference Standard

Abexinostat (PCI-24781)

CAS: 783355-60-2
Formula: C₂₁H₂₃N₃O₅
MW: 397.4 g/mol

VQ-047304

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API Reference Standards

Need a price, a spec or a custom compound?