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118795-49-6

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118795-49-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 118795-49-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,8,7,9 and 5 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 118795-49:
(8*1)+(7*1)+(6*8)+(5*7)+(4*9)+(3*5)+(2*4)+(1*9)=166
166 % 10 = 6
So 118795-49-6 is a valid CAS Registry Number.

118795-49-6Relevant articles and documents

Fission of 1,2,4-Thiadiazol-3-ones by Triphenylphosphane: Triphenylphosphonio Thioimidazolates and Their Consecutive Reactions

Tittelbach, Franz,Martin, Dieter

, p. 338 - 348 (2007/10/02)

Treatment of benzimidazothiadiazol-3(2H)-ones (1) and imidazothiadiazol-3(2H)-ones (17) with triphenylphosphan leads to the liberation of isocyanate and the formation of triphenylphosphonio-thiobenzimidazolat (4) and triphenylphosphonio-thioimidazolat (18), respectively. 2,4-Diphenyl-5-phenylimino-1,2,4-thiadiazol-3-one (23) is desulfurized with Ph3P and decomposed into phenyl isocyanate and diphenylcarbodiimide whereas the N-unsubstituted imino-thiadiazol-3-one (25) is attacked at the exocyclic imino group by Ph3P to give the N-phosphoranylidene thiourea (26).The structure of 4 can be rationalized as a dynamic system between polar and apolar valence isomeres.Reactions of 1 and 17 with cyanates, isocyanates, carbon disulfide, acetic anhydride, amines, benzyl chloride, grignard compounds, and CH acidic compounds are described.

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