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

Tofacitinib

CAS: 477600-75-2
Formula: C₁₆H₂₀N₆O
MW: 312.37 g/mol

VQ-007805

Reference Standard

Tofacitinib Citrate

CAS: 540737-29-9
Formula: C₂₂H₂₈N₆O₈
MW: 504.5 g/mol

In stock

Reference Standard

Tofisopam

CAS: 22345-47-7
Formula: C₂₂H₂₆N₂O₄
MW: 382.5 g/mol

VQ-034313

Reference Standard

Tofogliflozin

CAS: 903565-83-3
Formula: C₂₂H₂₆O₆
MW: 386.4 g/mol

VQ-040617

Reference Standard

Tolcapone

CAS: 134308-13-7
Formula: C₁₄H₁₁NO₅
MW: 273.24 g/mol

VQ-028431

Reference Standard

Toldimfos sodium

CAS: 575-75-7
Formula: C₉H₁₂NNaO₂P⁺
MW: 220.16 g/mol

VQ-042592

Reference Standard

Toldimfos Sodium Trihydrate

CAS: 5787-63-3
Formula: C₉H₁₆NNaO₃P
MW: 240.19 g/mol

VQ-042591

Reference Standard

Tolfenamic Acid

CAS: 13710-19-5
Formula: C₁₄H₁₂ClNO₂
MW: 261.7 g/mol

VQ-028434

Reference Standard

Tolmetin

CAS: 26171-23-3
Formula: C₁₅H₁₅NO₃
MW: 257.28 g/mol

In stock

Reference Standard

Tolnaftate

CAS: 2398-96-1
Formula: C₁₉H₁₇NOS
MW: 307.4 g/mol

VQ-028435

Reference Standard

Tolperisone

CAS: 728-88-1
Formula: C₁₆H₂₃NO
MW: 245.36 g/mol

VQ-034325

Reference Standard

Tolperisone Hydrochloride

CAS: 3644-61-9
Formula: C₁₆H₂₄ClNO
MW: 281.82 g/mol

VQ-023913

Reference Standard

Tolterodine Tartrate

CAS: 124937-52-6
Formula: C₂₆H₃₇NO₇
MW: 475.6 g/mol

VQ-028440

Reference Standard

Toltrazuril

CAS: 69004-03-1
Formula: C₁₈H₁₄F₃N₃O₄S
MW: 425.4 g/mol

VQ-034337

Reference Standard

Toluidine red

CAS: 2425-85-6
Formula: C₁₇H₁₃N₃O₃
MW: 307.3 g/mol

VQ-039546

Reference Standard

Tolvaptan

CAS: 150683-30-0
Formula: C₂₆H₂₅ClN₂O₃
MW: 448.9 g/mol

VQ-028449

Reference Standard

Tonibral

CAS: 10549-59-4
Formula: C₈H₁₅NO₄
MW: 189.21 g/mol

VQ-029010

Reference Standard

Topiramate WS

CAS: 97240-79-4
Formula: C₁₂H₂₁NO₈S
MW: 339.36 g/mol

In stock

Reference Standard

Topiroxostat

CAS: 577778-58-6
Formula: C₁₃H₈N₆
MW: 248.24 g/mol

VQ-034362

Reference Standard

Topotecan Hydrochloride

CAS: 119413-54-6
Formula: C₂₃H₂₄ClN₃O₅
MW: 457.9 g/mol

VQ-034363

Reference Standard

Torasemide

CAS: 56211-40-6
Formula: C₁₆H₂₀N₄O₃S
MW: 348.4 g/mol

In stock

Reference Standard

Tovorafenib

CAS: 1096708-71-2
Formula: C₁₇H₁₂Cl₂F₃N₇O₂S
MW: 506.3 g/mol

In stock

Reference Standard

Toxaphene

CAS: 8001-35-2
Formula: C₁₀H₈Cl₈
MW: 411.8 g/mol

VQ-043685

Reference Standard

Trabectedin

CAS: 114899-77-3
Formula: C₃₉H₄₃N₃O₁₁S
MW: 761.8 g/mol

VQ-034371

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?