67100-42-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 67100-42-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,7,1,0 and 0 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 67100-42:
(7*6)+(6*7)+(5*1)+(4*0)+(3*0)+(2*4)+(1*2)=99
99 % 10 = 9
So 67100-42-9 is a valid CAS Registry Number.