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87864-82-2

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87864-82-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 87864-82-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,8,6 and 4 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 87864-82:
(7*8)+(6*7)+(5*8)+(4*6)+(3*4)+(2*8)+(1*2)=192
192 % 10 = 2
So 87864-82-2 is a valid CAS Registry Number.

87864-82-2Downstream Products

87864-82-2Relevant articles and documents

Reactions of 4-Cyano- and 4-Methylimidazoles with Isocyanates

Mitsuhashi, Keiryo,Itho, Ei-ichi,Kawahara, Takeo,Tanaka, Kiyoshi

, p. 1103 - 1106 (2007/10/02)

4-Cyano- and 4-methylimidazoles reacted with methyl and aryl isocyanates to give exclusively 1-(substituted carbamoyl)-4-cyano- and 4-methylimidazoles, respectively.Refluxing of 1-carbamoyl-4-methylimidazoles in nitrobenzene yielded 2-carbamoyl-4-methylimidazoles through a known migration, whereas the 4-cyano analogues could not be caused to migrate.On the other hand, the treatment of 4-cyano-1-(methylcarbamoyl)imidazole with methyl isocyanate under the basic conditions resulted in the formation of 2-methyl-1-(methylcarbamoylimino)-2,3-dihydro-1H-imidazoimidazol-3-one which must be formed via the migration of the carbamoyl group to another nitrogen followed by the intramolecular cyclization of the newly introduced carbamoyl group with its vic cyano group.

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