204012-67-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 204012-67-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,4,0,1 and 2 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 204012-67:
(8*2)+(7*0)+(6*4)+(5*0)+(4*1)+(3*2)+(2*6)+(1*7)=69
69 % 10 = 9
So 204012-67-9 is a valid CAS Registry Number.