109813-77-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 109813-77-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,8,1 and 3 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 109813-77:
(8*1)+(7*0)+(6*9)+(5*8)+(4*1)+(3*3)+(2*7)+(1*7)=136
136 % 10 = 6
So 109813-77-6 is a valid CAS Registry Number.