89665-20-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 89665-20-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,6,6 and 5 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 89665-20:
(7*8)+(6*9)+(5*6)+(4*6)+(3*5)+(2*2)+(1*0)=183
183 % 10 = 3
So 89665-20-3 is a valid CAS Registry Number.
89665-20-3Relevant academic research and scientific papers
A CONVENIENT SYNTHESIS OF γ-ACYL- AND RELATED δLACTONES
kato, Michiharu,Saito, Hiroaki,Yoshikoshi, Akira
, p. 213 - 216 (2007/10/02)
γ-Acyl- and related δ-lactones having no δ substituents were synthesized in a sequence of reactions, 1,4-conjugate additions of sulfur-stabilized acetate anions to α,β-unsaturated ketones, followed by trapping of the resultant ketone enolates with formald
