204712-78-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 204712-78-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,4,7,1 and 2 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 204712-78:
(8*2)+(7*0)+(6*4)+(5*7)+(4*1)+(3*2)+(2*7)+(1*8)=107
107 % 10 = 7
So 204712-78-7 is a valid CAS Registry Number.