213531-78-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 213531-78-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,3,5,3 and 1 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 213531-78:
(8*2)+(7*1)+(6*3)+(5*5)+(4*3)+(3*1)+(2*7)+(1*8)=103
103 % 10 = 3
So 213531-78-3 is a valid CAS Registry Number.