1613643-77-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1613643-77-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,1,3,6,4 and 3 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1613643-77:
(9*1)+(8*6)+(7*1)+(6*3)+(5*6)+(4*4)+(3*3)+(2*7)+(1*7)=158
158 % 10 = 8
So 1613643-77-8 is a valid CAS Registry Number.