2031-13-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2031-13-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,0,3 and 1 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 2031-13:
(6*2)+(5*0)+(4*3)+(3*1)+(2*1)+(1*3)=32
32 % 10 = 2
So 2031-13-2 is a valid CAS Registry Number.
2031-13-2Relevant academic research and scientific papers
N-p-Toluenesulfonylpyrroles from 1,3-dienes
Harrington,Sanchez
, p. 175 - 180 (2007/10/02)
1,3-Dienes can be converted to N-p-toluenesulfonylpyrroles in two steps: 1) [4+2]-cycloaddition with N-sulfinyl-p-toluenesulfonamide and 2) conversion of the 3,6-dihydro-1,2-thiazine oxide adduct to a pyrrole using triethylamine-trimethylphosphite.
