492-91-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 492-91-1 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 4,9 and 2 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 492-91:
(5*4)+(4*9)+(3*2)+(2*9)+(1*1)=81
81 % 10 = 1
So 492-91-1 is a valid CAS Registry Number.
InChI:InChI=1/C21H32O2/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-16-19-17-15-18-20(22)21(19)23/h4-5,7-8,15,17-18,22-23H,2-3,6,9-14,16H2,1H3