Propyzamide

About Propyzamide

Propyzamide is an API reference standard carrying the CAS registry number 23950-58-5. The compound has the formula C12H11Cl2NO, corresponding to a molecular weight of 256.12 g/mol. Systematically, it is named 3,5-dichloro-N-(2-methylbut-3-yn-2-yl)benzamide. Alternative names: Pronamide and KERB 50W.

It is supplied as a solid. Reference materials should be stored sealed and away from light and moisture, as specified on the accompanying COA. Under GHS it is labelled “Warning”, so handle it with suitable PPE and consult the SDS.

As a reference sample of the parent drug substance, it is used for identification, assay and impurity-profiling work during analytical method development, validation (AMV) and routine QC. Typical end-use sectors are pharmaceutical manufacturing and academic and industrial research.

Available in 10 mg, 25 mg, 50 mg and 100 mg packs, Propyzamide is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

Identification & assay
Method development & validation
QC reference material
Agrochemical formulations

Industries

Specifications & identifiers

Chemical identifiers
Product name	Propyzamide
Catalogue No.	VQ-041706
CAS Number	23950-58-5
IUPAC name	3,5-dichloro-N-(2-methylbut-3-yn-2-yl)benzamide
Molecular formula	C₁₂H₁₁Cl₂NO
Molecular weight	256.12 g/mol
Exact mass	255.0218
Grade	Reference Standard
HSN code	38229090
InChIKey	PHNUZKMIPFFYSO-UHFFFAOYSA-N
SMILES	CC(C)(C#C)NC(=O)C1=CC(=CC(=C1)Cl)Cl
PubChem CID	32154

Physical properties
Physical form	Solid
LogP (XLogP3)	3.2
H-bond donors / acceptors	1 / 1
TPSA	29.1 Å²
Synonyms	Pronamide, 3,5-Dichloro-N-(1,1-dimethylpropynyl)benzamide, 3,5-Dichloro-N-(1,1-dimethyl-2-propynyl)benzamide, KERB 50W, 3,5-Dichloro-N-(1,1-dimethylprop-2-ynyl)benzamide, RH 315, N-(1,1-Dimethylpropynyl)-3,5-dichlorobenzamide, RH-315, Benzamide, 3,5-dichloro-N-(1,1-dimethyl-2-propynyl)-, propisamide, propizamide, Promamide

Safety & hazard information (GHS)

Health hazard

Environmental hazard

Signal word: Warning

Hazard statements

H351Suspected of causing cancer
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects

Precautionary statements: P203, P273, P280, P318, P391, P405, 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 Propyzamide?

The CAS Registry Number of Propyzamide is 23950-58-5. It is also known as Pronamide, 3,5-Dichloro-N-(1,1-dimethylpropynyl)benzamide, 3,5-Dichloro-N-(1,1-dimethyl-2-propynyl)benzamide.

What is the molecular formula and molecular weight of Propyzamide?

Propyzamide has the molecular formula C12H11Cl2NO and a molecular weight of 256.12 g/mol. Its IUPAC name is 3,5-dichloro-N-(2-methylbut-3-yn-2-yl)benzamide.

Which grade and pack sizes of Propyzamide can I order?

We supply Propyzamide 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 Propyzamide?

Yes. Every lot of Propyzamide 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 Propyzamide be shipped internationally?

Yes. Propyzamide 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.