158213-20-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 158213-20-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,8,2,1 and 3 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 158213-20:
(8*1)+(7*5)+(6*8)+(5*2)+(4*1)+(3*3)+(2*2)+(1*0)=118
118 % 10 = 8
So 158213-20-8 is a valid CAS Registry Number.