687983-85-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 687983-85-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,7,9,8 and 3 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 687983-85:
(8*6)+(7*8)+(6*7)+(5*9)+(4*8)+(3*3)+(2*8)+(1*5)=253
253 % 10 = 3
So 687983-85-3 is a valid CAS Registry Number.