178943-99-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 178943-99-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,8,9,4 and 3 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 178943-99:
(8*1)+(7*7)+(6*8)+(5*9)+(4*4)+(3*3)+(2*9)+(1*9)=202
202 % 10 = 2
So 178943-99-2 is a valid CAS Registry Number.