1-(4-Chlorophenyl)-1,2-dihydro-3H-Pyrazol-3-one

Name: 1-(4-Chlorophenyl)-1,2-dihydro-3H-Pyrazol-3-one
Brand: Zemixal
SKU: ZX-046130

Reference StandardAvailable on request

Order 1-(4-Chlorophenyl)-1,2-dihydro-3H-Pyrazol-3-one (CAS 76205-19-1) online at Zemixal: C9H7ClN2O, COA and SDS with every lot, worldwide shipping.

Pack sizes

1-(4-Chlorophenyl)-1,2-dihydro-3H-Pyrazol-3-one chemical structure

CAS number76205-19-1

FormulaC₉H₇ClN₂O

Molar mass194.62 g/mol

Physical formSolid

HS code38229090

InChIKeyDRENHOMDLNJDOG-UHFFFAOYSA-N

IUPAC name2-(4-chlorophenyl)-1H-pyrazol-5-one

About 1-(4-Chlorophenyl)-1,2-dihydro-3H-Pyrazol-3-one

1-(4-Chlorophenyl)-1,2-dihydro-3H-Pyrazol-3-one belongs to the Pyraclostrobin reference-standard family in the Zemixal catalogue. Key data (Reference Standard): CAS 76205-19-1, formula C9H7ClN2O and molar mass 194.62 g/mol. It is handled as a solid.

Common uses in the lab and plant

Analytical method development
Method validation (AMV)
QC release testing
ANDA / DMF filings

Handling and storage

Hazard communication follows GHS (Warning: H315, H319 and H335). Our SDS lists exposure controls and first-aid measures.

Available as 10 mg, 25 mg, 50 mg and 100 mg. Larger or split packs can be arranged. Each lot travels with a certificate of analysis with characterisation data. Request pricing online and we confirm availability, documentation and freight to your country.

Reference standards for Pyraclostrobin

See every impurity, metabolite and related compound we list for this API.

Pyraclostrobin standards

Typical uses

Analytical method development
Method validation (AMV)
QC release testing
ANDA / DMF filings

Applications

Pharmaceutical Manufacturing and QC Research Labs and Universities

Specifications and identifiers

Specifications of 1-(4-Chlorophenyl)-1,2-dihydro-3H-Pyrazol-3-one
Product name	1-(4-Chlorophenyl)-1,2-dihydro-3H-Pyrazol-3-one
Catalogue number	ZX-046130
CAS number	76205-19-1
IUPAC name	2-(4-chlorophenyl)-1H-pyrazol-5-one
Molecular formula	C₉H₇ClN₂O
Molar mass	194.62 g/mol
Exact mass	194.0247
Grade	Reference Standard
Physical form	Solid
XLogP3	2.1
H-bond donors / acceptors	1 / 2
Topological polar surface area	32.3 Å²
HS code	38229090
InChIKey	DRENHOMDLNJDOG-UHFFFAOYSA-N
SMILES	C1=CC(=CC=C1N2C=CC(=O)N2)Cl
PubChem CID	11356026
Synonyms	1-(4-chlorophenyl)pyrazol-3-ol, 1-(4-Chlorophenyl)-1H-pyrazol-3-ol, 1-(4-Chlorophenyl)pyrazol-3(2H)-one, 3H-Pyrazol-3-one, 1-(4-chlorophenyl)-1,2-dihydro-, 1-(4-Chlorophenyl)-3-hydroxypyrazole, 1-(4-Chlorophenyl)-3-hydroxy-1H-pyrazole, 1-(4-Chlorophenyl)-1H-pyrazole-3-ol, 1-(para-chlorophenyl)-3-hydroxypyrazole, 1-(4-chlorophenyl)-2,3-dihydro-1H-pyrazol-3-one, 1-(4-chlorophenyl)-3-hydroxy-pyrazole, 1-(4-chloro-phenyl)-1,2-dihydro-pyrazol-3-one

Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.

Safety and GHS hazards

Irritant or harmful

Signal word Warning

H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements P261, P264, P264 + P265, P271, P280, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P332 + P317, P337 + P317, P362 + P364, P403 + P233, P405, P501

Classification summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.

Pack sizes

Pack sizes of 1-(4-Chlorophenyl)-1,2-dihydro-3H-Pyrazol-3-one
10 mg	Quoted on request
25 mg	Quoted on request
50 mg	Quoted on request
100 mg	Quoted on request

Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.

Questions about 1-(4-Chlorophenyl)-1,2-dihydro-3H-Pyrazol-3-one

Which CAS number identifies 1-(4-Chlorophenyl)-1,2-dihydro-3H-Pyrazol-3-one?

1-(4-Chlorophenyl)-1,2-dihydro-3H-Pyrazol-3-one is registered under CAS 76205-19-1. You may also see it listed as 1-(4-chlorophenyl)pyrazol-3-ol, 1-(4-Chlorophenyl)-1H-pyrazol-3-ol, 1-(4-Chlorophenyl)pyrazol-3(2H)-one. Our catalogue number for this item is ZX-046130.

What are the formula and molar mass of 1-(4-Chlorophenyl)-1,2-dihydro-3H-Pyrazol-3-one?

For 1-(4-Chlorophenyl)-1,2-dihydro-3H-Pyrazol-3-one, its formula is C9H7ClN2O and its molar mass is 194.62 g/mol. The systematic (IUPAC) name is 2-(4-chlorophenyl)-1H-pyrazol-5-one. InChIKey DRENHOMDLNJDOG-UHFFFAOYSA-N lets you match it in any structure database.

How is 1-(4-Chlorophenyl)-1,2-dihydro-3H-Pyrazol-3-one used in pharmaceutical QC?

1-(4-Chlorophenyl)-1,2-dihydro-3H-Pyrazol-3-one is a characterised reference material linked to Pyraclostrobin. Laboratories use it to identify and quantify this impurity during method development and validation, stability work, batch release testing and regulatory submissions.

What grade and pack sizes are available for 1-(4-Chlorophenyl)-1,2-dihydro-3H-Pyrazol-3-one?

This listing is Reference Standard grade. Standard packs are 10 mg, 25 mg, 50 mg, 100 mg. Larger quantities and custom packing can be quoted on request.

Which documents come with 1-(4-Chlorophenyl)-1,2-dihydro-3H-Pyrazol-3-one?

Each lot ships with a batch certificate of analysis and a 16-section GHS safety data sheet. A typical COA or specification sheet can be shared with the quotation before you order.

Can Zemixal ship 1-(4-Chlorophenyl)-1,2-dihydro-3H-Pyrazol-3-one to my country?

Yes. Because 1-(4-Chlorophenyl)-1,2-dihydro-3H-Pyrazol-3-one is classed as hazardous, it travels in UN-approved packaging as dangerous goods under IATA or IMDG rules, with the export paperwork your broker needs.

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