1307213-21-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1307213-21-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,0,7,2,1 and 3 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1307213-21:
(9*1)+(8*3)+(7*0)+(6*7)+(5*2)+(4*1)+(3*3)+(2*2)+(1*1)=103
103 % 10 = 3
So 1307213-21-3 is a valid CAS Registry Number.