213457-87-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 213457-87-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,3,4,5 and 7 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 213457-87:
(8*2)+(7*1)+(6*3)+(5*4)+(4*5)+(3*7)+(2*8)+(1*7)=125
125 % 10 = 5
So 213457-87-5 is a valid CAS Registry Number.