89872-31-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 89872-31-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,8,7 and 2 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 89872-31:
(7*8)+(6*9)+(5*8)+(4*7)+(3*2)+(2*3)+(1*1)=191
191 % 10 = 1
So 89872-31-1 is a valid CAS Registry Number.