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1437786-17-8

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1437786-17-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1437786-17-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,3,7,7,8 and 6 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1437786-17:
(9*1)+(8*4)+(7*3)+(6*7)+(5*7)+(4*8)+(3*6)+(2*1)+(1*7)=198
198 % 10 = 8
So 1437786-17-8 is a valid CAS Registry Number.

1437786-17-8Downstream Products

1437786-17-8Relevant articles and documents

Regioselectivity of the reaction of 4H-1,2,4-triazole-3-thiol derivatives with chloroethynylphosphonates and structure of the products

Erkhitueva,Dogadina,Khramchikhin,Ionin

, p. 580 - 590 (2013/06/27)

Chloroethynylphosphonates reacted with 4H-1,2,4-triazole-3-thiols in anhydrous acetonitrile to afford fused heterocyclic compounds, 6-(dialkoxyphosphoryl)-3H-thiazolo[3,2-b][1,2,4]triazol-7-ium chlorides, with high regioselectivity. The products were converted into inner salts (zwitterions) of the corresponding phosphonic acids or their monoesters with the positive charge localized on N7. A probable reaction mechanism implies initial formation of sulfonium ion via attack by the thionic sulfur atom on the acetylenic carbon atom linked to chlorine, followed by intramolecular cyclization involving attack on the other acetylenic carbon atom by N 2 of the triazole ring.

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