140138-80-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 140138-80-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,0,1,3 and 8 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 140138-80:
(8*1)+(7*4)+(6*0)+(5*1)+(4*3)+(3*8)+(2*8)+(1*0)=93
93 % 10 = 3
So 140138-80-3 is a valid CAS Registry Number.
140138-80-3Relevant articles and documents
Dry reaction under microwave: Condensation of sulfones with aldehydes of KF-alumina
Villemin,Ben Alloum
, p. 63 - 68 (1991)
Ethyl phenylsulfonylacetate(1), phenylsulfonylacetonitrile(2) and phenylsulfonylacetophenone(3) were condensated with aldehydes (a-d) into unsaturated sulfone without solvent in the presence of KF on alumina under microwave irradiation.
