21647-53-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21647-53-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,6,4 and 7 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 21647-53:
(7*2)+(6*1)+(5*6)+(4*4)+(3*7)+(2*5)+(1*3)=100
100 % 10 = 0
So 21647-53-0 is a valid CAS Registry Number.