21354-25-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21354-25-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,3,5 and 4 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 21354-25:
(7*2)+(6*1)+(5*3)+(4*5)+(3*4)+(2*2)+(1*5)=76
76 % 10 = 6
So 21354-25-6 is a valid CAS Registry Number.