667883-57-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 667883-57-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,7,8,8 and 3 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 667883-57:
(8*6)+(7*6)+(6*7)+(5*8)+(4*8)+(3*3)+(2*5)+(1*7)=230
230 % 10 = 0
So 667883-57-0 is a valid CAS Registry Number.