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131971-53-4

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131971-53-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 131971-53-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,9,7 and 1 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 131971-53:
(8*1)+(7*3)+(6*1)+(5*9)+(4*7)+(3*1)+(2*5)+(1*3)=124
124 % 10 = 4
So 131971-53-4 is a valid CAS Registry Number.

131971-53-4Downstream Products

131971-53-4Relevant articles and documents

The Chlorination of 4-Chloro-2,3,6-trimethylphenol. Some Addition Reactions of 4,6-Dichlorocyclohexa-2,4-dienones

Hartshorn, Michael P.,Hayman, Kamala A.,Martyn, Robert J.,Robinson, Ward T.,Vaughan, John,et al.

, p. 1729 - 1744 (2007/10/02)

Reaction of mixture of 6-chlorocyclohexa-2,4-dienones (4) and (5) with chlorine in acetic acid gives the tetrachloro ketones (2) and (3), the major products of chlorination of 2,3,6-trimethylphenol (1a) or 4-chloro-2,3,6-trimethylphenol (1b).Reactions of this mixture of 6-chlorocyclohexa-2,4-dienones (4) and (5) in acetic acid with chlorine acetate, chlorine, chlorine in the presence of sodium acetate, and in benzene with nitrogen dioxide are described.X-ray crystal structure determinations are reported for compounds (3), (6)-(8) and (11)-(13).

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