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5-Chloro-1-phenyl-1H-pyrazole is an organic compound with the chemical formula C9H7ClN2. It is a derivative of the pyrazole ring system, which is a five-membered heterocyclic ring containing three nitrogen atoms. This particular compound features a phenyl group (C6H5) attached to the pyrazole ring, and a chlorine atom at the 5-position. It is a white to off-white crystalline solid and is used as an intermediate in the synthesis of various pharmaceuticals and agrochemicals. The compound is known for its potential applications in the development of anti-inflammatory, antipyretic, and analgesic drugs, as well as in the creation of herbicides and insecticides. Due to its reactivity and versatility, 5-chloro-1-phenyl-1H-pyrazole is an important building block in the field of medicinal chemistry and chemical research.

1127-84-0

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1127-84-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1127-84-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,1,2 and 7 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1127-84:
(6*1)+(5*1)+(4*2)+(3*7)+(2*8)+(1*4)=60
60 % 10 = 0
So 1127-84-0 is a valid CAS Registry Number.

1127-84-0SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 16, 2017

Revision Date: Aug 16, 2017

1.Identification

1.1 GHS Product identifier

Product name 5-chloro-1-phenylpyrazole

1.2 Other means of identification

Product number -
Other names Pyrazole,5-chloro-1-phenyl

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:1127-84-0 SDS

1127-84-0Relevant academic research and scientific papers

3,3-Dichloroprop-2-ene iminium salts (vinylogous Viehe salts): A study of their reactivity towards nucleophiles

Jahn, Ullrich,Andersch, Jens,Schroth, Werner

, p. 573 - 588 (2007/10/03)

The title compounds 3 react regioselectively at either the 1- or 3- position depending on the reaction partner. Chloro substitution affording new propene iminium salts is preferred e.g. in the reaction with mercaptans (to 10, 11), amines (to 7, 14, 15) and some activated arenes and hetarenes (to 26, 27). Nucleophilic attack at the 1-position providing an allyl or allylidene structure is observed e.g. in the reaction with water (to 41, alcohol (to 6), trialkyl phosphite (to 21, 22), trimethylsilyl cyanide (to 30), Grignard reagents (to 31), and acceptor activated methylene compounds (to 33-44). Reaction at both positions with heterocyclization to 13 occurs with thioamide functions. The regiochemistry depends on a complex interplay of several factors in contrast to the FMO predicted orientation. The utility of 3 and some consecutive products as versatile C3-building blocks for further syntheses is foreseeable.

SYNTHESIS OF 1-ARYL-5-CHLOROPYRAZOLES

Dudinov, A. A.,Belen'kii, L. I.,Krayushkin, M. M.

, p. 36 - 39 (2007/10/02)

A method for obtaining 1-aryl-5-chloropyrazoles with vacant 3 and 4 positions by cyclization of 3,3-dichloro-2-propenal arylhydrazones is proposed.

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