213699-42-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 213699-42-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,3,6,9 and 9 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 213699-42:
(8*2)+(7*1)+(6*3)+(5*6)+(4*9)+(3*9)+(2*4)+(1*2)=144
144 % 10 = 4
So 213699-42-4 is a valid CAS Registry Number.