667889-48-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 667889-48-7 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 9 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 667889-48:
(8*6)+(7*6)+(6*7)+(5*8)+(4*8)+(3*9)+(2*4)+(1*8)=247
247 % 10 = 7
So 667889-48-7 is a valid CAS Registry Number.