213690-90-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 213690-90-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,3,6,9 and 0 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 213690-90:
(8*2)+(7*1)+(6*3)+(5*6)+(4*9)+(3*0)+(2*9)+(1*0)=125
125 % 10 = 5
So 213690-90-5 is a valid CAS Registry Number.