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172983-52-7

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172983-52-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 172983-52-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,2,9,8 and 3 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 172983-52:
(8*1)+(7*7)+(6*2)+(5*9)+(4*8)+(3*3)+(2*5)+(1*2)=167
167 % 10 = 7
So 172983-52-7 is a valid CAS Registry Number.

172983-52-7Relevant academic research and scientific papers

SYNTHESIS OF 2-SUBSTITUTED 2,3-DIHYDRO-1,4-BENZOTHIAZINE-3-THIONES VIA IMINOPHOSPHORANES

Takahashi, Masahiko,Ohba, Masaru

, p. 2263 - 2270 (2007/10/03)

2-(Substituted methylsulfanyl)anilines (5) were treated with triphenylphosphine dibromide to yield iminophosphoranes (6), whose aza-Wittig reaction with carbon disulfide gave 2-(substituted methylsulfanyl)phenyl isothiocyanates (8).Cyclization of 8 by strong bases afforded 2-substituted 2,3-dihydro-1,4-benzothiazine-3-thiones (10).

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