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68340-48-7

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68340-48-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 68340-48-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,8,3,4 and 0 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 68340-48:
(7*6)+(6*8)+(5*3)+(4*4)+(3*0)+(2*4)+(1*8)=137
137 % 10 = 7
So 68340-48-7 is a valid CAS Registry Number.

68340-48-7Relevant articles and documents

Preparation and reactions of 5-Aryl-1,4,2-dithiazolium salts

Yonemoto, Katsumi,Shibuya, Isao,Tsuchiya, Tohru,Masahiko Yasumoto,Taguchi, Yoichi

, p. 2933 - 2937 (1990)

S-Thioaroylsulfenamides (ArCSSNH2), formed by reaction of ArCSS-Na+ with hydroxylamine-O-sulfonic acid, were aroylated or acylated to give N-aroyl- or N-acyl-S-thioaroylsulfenamides, respectively, which were then cyclized with dehydration to afford 3-substituted 5-aryl-1,4,2-dithiazolium salts. The behavior of 3,5-diphenyl-1,4,2-dithiazolium Perchlorate toward nucleophiles such as active methylene and amino compounds was studied systematically. The reaction can be classified into two cases depending on fission modes of initial adducts, i.e., ring opening-ring closure reaction (Path B) and fragmentation of dithiazole ring (Path C), and in some cases the initial adducts were isolated.

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