77199-05-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77199-05-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,1,9 and 9 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 77199-05:
(7*7)+(6*7)+(5*1)+(4*9)+(3*9)+(2*0)+(1*5)=164
164 % 10 = 4
So 77199-05-4 is a valid CAS Registry Number.
77199-05-4Relevant academic research and scientific papers
HETEROCYCLES IX. ASYMMETRIC EPOXIDATION OF A QUINONE AND SYNTHESES OF CHIRAL LACTONES
Harigaya, Yoshihiro,Yamaguchi, Hiroko,Onda, Masayuki
, p. 183 - 185 (2007/10/02)
The epoxy diketone (2) is obtained in optically active form by the phase-transfer chiral epoxidation of the quinone (1).The transformation of 2 to the lactones (5) and (6) is carried out without the loss of optical activity.
