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71989-60-1

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71989-60-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 71989-60-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,9,8 and 9 respectively; the second part has 2 digits, 6 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 71989-60:
(7*7)+(6*1)+(5*9)+(4*8)+(3*9)+(2*6)+(1*0)=171
171 % 10 = 1
So 71989-60-1 is a valid CAS Registry Number.

71989-60-1SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 18, 2017

Revision Date: Aug 18, 2017

1.Identification

1.1 GHS Product identifier

Product name 4-chloro-1-hydroxy-2-oxido-3,5-diphenylpyrazol-2-ium

1.2 Other means of identification

Product number -
Other names -

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:71989-60-1 SDS

71989-60-1Downstream Products

71989-60-1Relevant articles and documents

Halogenation of N-Oxygenated Pyrazoles. Preparation of N-Oxygenated 4-Halopyrazole and 4,4-Dihalo-4H-pyrazole Derivatives

Hansen, John F.,Kim, Yong In,Griswold, Linus J.,Hoelle, Gary W.,Taylor, Deborah L.,Vietti, David E.

, p. 76 - 80 (2007/10/02)

Reaction of some 1-hydroxypyrazoles and 1-hydroxypyrazole 2-oxides with iodine or with 1 equiv of N-chloro- or N-bromosuccinamide (NCS or NBS) gives high yields of the 4-halo derivatives.With 2 equiv of NBS or NCS or with tert-butyl hypochlorite the products are 4,4-dihalo-4H-pyrazole 1-oxides or 1,2-dioxides.Reaction of 3,5-diphenylpyrazole with 2 equiv of tert-butyl hypochlorite gives 1,4-dichloro-3,5-diphenylpyrazole, which rearranges to 4,4-dichloro-3,5-diphenyl-4H-pyrazole.Silver ion assisted solvolysis of the gem-dihalides to form 4-chloro-3H-pyrazole derivatives is described.

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