218628-79-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 218628-79-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,8,6,2 and 8 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 218628-79:
(8*2)+(7*1)+(6*8)+(5*6)+(4*2)+(3*8)+(2*7)+(1*9)=156
156 % 10 = 6
So 218628-79-6 is a valid CAS Registry Number.
218628-79-6Relevant articles and documents
A Useful Preparation of Pyrroles from α,β-unsaturated Sulfones
Haake, Gerold,Struve, Daria,Montforts, Franz-Peter
, p. 9703 - 9704 (1994)
The addition of alkyl isocyanoacetate to α,β-unsaturated sulfones, which are easily obtained from olefins, affords a convenient access to pyrroles with unusual substitution patterns.
