520-20-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 520-20-7 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 5,2 and 0 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 520-20:
(5*5)+(4*2)+(3*0)+(2*2)+(1*0)=37
37 % 10 = 7
So 520-20-7 is a valid CAS Registry Number.
InChI:InChI=1/C19H32NO.BrH/c1-16(2)19(17-10-6-4-7-11-17)18(21)12-15-20(3)13-8-5-9-14-20;/h4,6-7,10-11,16,18-19,21H,5,8-9,12-15H2,1-3H3;1H/q+1;/p-1