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371149-32-5

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371149-32-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 371149-32-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,7,1,1,4 and 9 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 371149-32:
(8*3)+(7*7)+(6*1)+(5*1)+(4*4)+(3*9)+(2*3)+(1*2)=135
135 % 10 = 5
So 371149-32-5 is a valid CAS Registry Number.

371149-32-5Relevant articles and documents

Arylamino-thieno-oxobutanainides under Lawesson's conditions: Competition between thienylpyrrole and bithiophene formation

Raposo, M. Manuela M.,Sampaio, Ana M. B. A.,Kirsch

, p. 199 - 210 (2005)

1-Aryl-2-thienyl-substituted pyrroles and/or 5-arylamino-2,2′- bithiophenes were synthesized by treatment of arylamino-thieno-oxobutanamides with Lawesson's reagent. These in turn were prepared by direct amidation of 4-oxo-(2-thienyl)butanoic acid through DCC-BtOH mediated reactions.

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