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99708-82-4

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99708-82-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 99708-82-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,7,0 and 8 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 99708-82:
(7*9)+(6*9)+(5*7)+(4*0)+(3*8)+(2*8)+(1*2)=194
194 % 10 = 4
So 99708-82-4 is a valid CAS Registry Number.

99708-82-4Relevant articles and documents

A New Synthesis of Benzothiophenes and Benzothiophenes by Annulation of Disubstituted Thiophenes

Terpstra, Jan W.,Leusen, Albert M. van

, p. 230 - 238 (2007/10/02)

Nine newly prepared ortho-disubtituted thiophenes (1-5) react with Michael acceptors to form benzo- and benzothiophenes.This novel annulation process is specifically suited to form benzothiophenes with substituents in the benzene moiety.Substitution

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