21386-58-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21386-58-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,3,8 and 6 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 21386-58:
(7*2)+(6*1)+(5*3)+(4*8)+(3*6)+(2*5)+(1*8)=103
103 % 10 = 3
So 21386-58-3 is a valid CAS Registry Number.