186203-34-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 186203-34-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,6,2,0 and 3 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 186203-34:
(8*1)+(7*8)+(6*6)+(5*2)+(4*0)+(3*3)+(2*3)+(1*4)=129
129 % 10 = 9
So 186203-34-9 is a valid CAS Registry Number.