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172983-78-7

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172983-78-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 172983-78-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,2,9,8 and 3 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 172983-78:
(8*1)+(7*7)+(6*2)+(5*9)+(4*8)+(3*3)+(2*7)+(1*8)=177
177 % 10 = 7
So 172983-78-7 is a valid CAS Registry Number.

172983-78-7Relevant articles and documents

A NEW SYNTHESIS OF 3-SUBSTITUTED INDOLINES AND INDOLES

Kihara, Masaru,Iwai, Yasumasa,Nagao, Yoshimitsu

, p. 2279 - 2288 (2007/10/03)

3-Phenyl- and 3-alkyl-3-hydroxyindolines were synthesized by intramolecular Barbier reaction of phenyl and alkyl N-(2-iodophenyl)-N-methylaminomethyl ketones with n-BuLi, which were easily prepared from N-methyl-2-iodoaniline and bromomethyl ketones.The treatment of the indolines with acid gave the corresponding indoles in quantitative yields.

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