131980-58-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 131980-58-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,9,8 and 0 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 131980-58:
(8*1)+(7*3)+(6*1)+(5*9)+(4*8)+(3*0)+(2*5)+(1*8)=130
130 % 10 = 0
So 131980-58-0 is a valid CAS Registry Number.
131980-58-0Relevant articles and documents
Pyrazolotrithiadiazepines and their Unexpected Rearrangement to 1,2,3-Dithiazoles
Plater, M. John,Rees, Charles W.
, p. 1319 - 1320 (1990)
Treatment of 6-bromotrithiadiazepine (1) with Huenig's base in the presence of diaryldiazomethanes (2) gives the trithiadiazepyne cycloadducts (3) which undergo a deep-seated thermal rearrangement to give fused 1,2,3-dithiazoles (4), for which a mechanism