670258-42-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 670258-42-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,7,0,2,5 and 8 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 670258-42:
(8*6)+(7*7)+(6*0)+(5*2)+(4*5)+(3*8)+(2*4)+(1*2)=161
161 % 10 = 1
So 670258-42-1 is a valid CAS Registry Number.