Coumachlor

Name: Coumachlor
Brand: Vaqora Chemicals
SKU: VQ-047872

About Coumachlor

Coumachlor (CAS 81-82-3) is an API reference standard offered by Vaqora Chemicals. The compound has the formula C19H15ClO4, corresponding to a molecular weight of 342.8 g/mol. The IUPAC name is 3-[1-(4-chlorophenyl)-3-oxobutyl]-4-hydroxychromen-2-one. Alternative names: Tomorin and Experimental rodenticide 332.

It is supplied as a solid. Reference materials should be stored sealed and away from light and moisture, as specified on the accompanying COA. The GHS classification uses the signal word “Warning”, so appropriate gloves, eye protection and ventilation are recommended.

Laboratories use this the parent drug substance standard for identity and assay testing, system suitability checks and method validation supporting ANDA and DMF filings. It is used across pharmaceutical manufacturing and academic and industrial research.

Vaqora Chemicals supplies Coumachlor in 10 mg, 25 mg, 50 mg and 100 mg packs, each shipped with a Certificate of Analysis (COA), and exports worldwide.

Typical applications

Identification & assay
Method development & validation
QC reference material

Industries

Specifications & identifiers

Chemical identifiers
Product name	Coumachlor
Catalogue No.	VQ-047872
CAS Number	81-82-3
IUPAC name	3-[1-(4-chlorophenyl)-3-oxobutyl]-4-hydroxychromen-2-one
Molecular formula	C₁₉H₁₅ClO₄
Molecular weight	342.8 g/mol
Exact mass	342.0659
Grade	Reference Standard
HSN code	38229090
InChIKey	DEKWZWCFHUABHE-UHFFFAOYSA-N
SMILES	CC(=O)CC(C1=CC=C(C=C1)Cl)C2=C(C3=CC=CC=C3OC2=O)O
PubChem CID	54682651

Physical properties
Physical form	Solid
LogP (XLogP3)	3.3
H-bond donors / acceptors	1 / 4
TPSA	63.6 Å²
Synonyms	Tomorin, Experimental rodenticide 332, Geigy rodenticide exp. 332, 3-(1-Acetyl-2-(p-chlorophenyl)ethyl)-4-hydroxycoumarin, 3-(alpha-Acetonyl-4-chlorobenzyl)-4-hydroxycoumarin, 3-(alpha-Acetonyl-p-chlorobenzyl)-4-hydroxycoumarin, 3-(1-(4-Chlorophenyl)-3-oxobutyl)-4-hydroxy-2H-1-benzopyran-2-one, 3-(1-(4-Chlorophenyl)-3-oxobutyl)-4-hydroxycoumarin, 4-Hydroxy-3-(1-(4-chlorophenyl)-3-oxobutyl)-2H-1-benzopyran-2-one, 2H-1-Benzopyran-2-one, 3-[1-(4-chlorophenyl)-3-oxobutyl]-4-hydroxy-, 3-(alpha-p-Chlorophenyl-beta-acetylethyl)-4-hydroxycoumarin, 3-[1-(4-Chlorophenyl)-3-oxobutyl]-4-hydroxy-2H-1-benzopyran-2-one

Safety & hazard information (GHS)

Health hazard

Signal word: Warning

Hazard statements

H412Harmful to aquatic life with long lasting effects

Precautionary statements: P260, P273, P319, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of Coumachlor?

The CAS Registry Number of Coumachlor is 81-82-3. It is also known as Tomorin, Experimental rodenticide 332, Geigy rodenticide exp. 332.

What is the molecular formula and molecular weight of Coumachlor?

Coumachlor has the molecular formula C19H15ClO4 and a molecular weight of 342.8 g/mol. Its IUPAC name is 3-[1-(4-chlorophenyl)-3-oxobutyl]-4-hydroxychromen-2-one.

Which grade and pack sizes of Coumachlor can I order?

We supply Coumachlor in Reference Standard grade, in 10 mg, 25 mg, 50 mg, 100 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Coumachlor?

Yes. Every lot of Coumachlor is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Coumachlor be shipped internationally?

Yes. Coumachlor is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.