77-20-3 Usage
Therapeutic Function
Narcotic analgesic
Check Digit Verification of cas no
The CAS Registry Mumber 77-20-3 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 7 and 7 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 77-20:
(4*7)+(3*7)+(2*2)+(1*0)=53
53 % 10 = 3
So 77-20-3 is a valid CAS Registry Number.
InChI:InChI=1/C16H23NO2/c1-4-15(18)19-16(14-8-6-5-7-9-14)10-11-17(3)12-13(16)2/h5-9,13H,4,10-12H2,1-3H3/t13-,16+/m1/s1