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131156-97-3

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131156-97-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 131156-97-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,1,5 and 6 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 131156-97:
(8*1)+(7*3)+(6*1)+(5*1)+(4*5)+(3*6)+(2*9)+(1*7)=103
103 % 10 = 3
So 131156-97-3 is a valid CAS Registry Number.

131156-97-3Relevant articles and documents

Synthesis of Thiazolidine-2,5-dithiones: Characterisation of 4-Substituted Thiazolidinedithiones

Yamamoto, Tatsuo,Itoh, Masao,Uchiyama Saitoh, Nobuko,Muraoka, Motomu,Takeshima, Tatsuo

, p. 2459 - 2463 (2007/10/02)

A general method for the synthesis of a series of 4,4-disubstituted thiazolidine-2,5-dithiones (1)-(6) initially consisted in reactions of α-metallated aralkyl isothiocyanates with carbon disulphide. 4-Monosubstituted thiazolidine-2,5-dithiones (7)-(9) are very susceptible to oxidation, changing rapidly into their oxidative dimers.The reason for the unexpected methylation of thiazolidine dithiones (7)-(9) became evident from the results of MNDO calculations.

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