83920-64-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 83920-64-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,9,2 and 0 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 83920-64:
(7*8)+(6*3)+(5*9)+(4*2)+(3*0)+(2*6)+(1*4)=143
143 % 10 = 3
So 83920-64-3 is a valid CAS Registry Number.
83920-64-3Relevant academic research and scientific papers
β-Keto-δ-valerolactone: Synthesis and use as methylvinylketone anion equivalent in michael additions
D'Angelo, Jean,Gomez-Pardo, Domingo
, p. 3063 - 3066 (2007/10/02)
β-Keto-δ-valerolactone 11 was prepared from 3-butyn-l-ol 6 in 5 steps (50 % overall yield). This lactone was added to Michael acceptors 13, 17, 19 and 25, giving adducts 14, 18, 20 and 26 respectively.
