117783-53-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 117783-53-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,7,8 and 3 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 117783-53:
(8*1)+(7*1)+(6*7)+(5*7)+(4*8)+(3*3)+(2*5)+(1*3)=146
146 % 10 = 6
So 117783-53-6 is a valid CAS Registry Number.