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13625-52-0

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13625-52-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 13625-52-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,6,2 and 5 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 13625-52:
(7*1)+(6*3)+(5*6)+(4*2)+(3*5)+(2*5)+(1*2)=90
90 % 10 = 0
So 13625-52-0 is a valid CAS Registry Number.

13625-52-0Relevant articles and documents

Alkali catalyzed thermal cyclization of 1-substituted and 1,6-disubstituted 2,5-dithiobiureas: Formation of 1,2,4-triazolidine-3,5-dithiones and/or 1,3,4-thiadiazoline-5-thiones

Raphael, Elsamma,Joshua, C. P.,Koshy, Lisamma

, p. 635 - 638 (2007/10/02)

Alkali catalyzed thermal cyclization of 1-alkyl and 1,6-dialkyl-2,5-dithiobiureas (I, R=alkyl, R'=H and R=R'=alkyl) results in the formation of 4-alkyl-1,2,4-triazolidine-3,5-dithiones (V) (alkyl=Me or Et) and 2-alkylamino-Δ2-1,3,4-thiadiazoline-5-thiones (VI) (alkyl=n-Pr or n-Bu).Under the same conditions, 1-alkyl-6-aryl-2,5-dithiobiureas (I, R=alkyl, R'=aryl) give 2-arylamino-Δ2-1,3,4-thiadiazoline-5-thiones (IX) (alkyl=Me, Et, n-Pr or n-Bu) and 4-alkyl-1,2,4-triazolidine-3,5-dithiones (V) also when the alkyl groups are Me or Et.

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