133786-91-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 133786-91-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,7,8 and 6 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 133786-91:
(8*1)+(7*3)+(6*3)+(5*7)+(4*8)+(3*6)+(2*9)+(1*1)=151
151 % 10 = 1
So 133786-91-1 is a valid CAS Registry Number.
133786-91-1Relevant articles and documents
Stereospecific conversion of chiral 1,2-cyclic sulfates to chiral imidazolines
Oi,Sharpless
, p. 999 - 1002 (2007/10/02)
The one pot preparation of imidazolines from 1,2-cyclic sulfates is reported. Amidines react with cyclic sulfates to give zwitterionic intermediates, and subsequent intramolecular cyclization affords imidazolines. The preparation of enantiopure stilbene d
