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1372151-68-2

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1372151-68-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1372151-68-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,7,2,1,5 and 1 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1372151-68:
(9*1)+(8*3)+(7*7)+(6*2)+(5*1)+(4*5)+(3*1)+(2*6)+(1*8)=142
142 % 10 = 2
So 1372151-68-2 is a valid CAS Registry Number.

1372151-68-2Relevant articles and documents

Reactions of α-mercaptocarboxylic acid hydrazides with triethyl orthoesters: Synthesis of 1,3,4-thiadiazin-5(6H)-ones and 1,3,4-oxadiazoles

Kudelko, Agnieszka

, p. 3616 - 3625 (2012/06/18)

Reactions of α-mercapto-β-phenylpropionic and α-mercaptophenylacetic acid hydrazides with triethyl orthoesters were conducted under N2 in glacial acetic acid and resulted in the formation of two groups of products, derivatives of 1,3,4-thiadiazin-5(6H)-ones and 2-(1-mercaptomethyl)-1,3,4-oxadiazoles. When conducting the same transformations on α-mercaptophenylacetic acid hydrazide in the presence of air, two different products from the 1,3,4-oxadiazole family, the appropriate bis(1,3,4-oxadiazol-2-yl-phenylmethyl) disulfides and 2-benzyl-1,3,4- oxadiazoles, were formed with the liberation of free sulfur. The oxygenated bis(1,3,4-oxadiazol-2-yl-phenylmethyl) disulfides were reduced to the corresponding 2-(1-mercaptomethyl)-1,3,4-oxadiazoles with the use of zinc powder under mild conditions.

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