221527-72-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 221527-72-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,5,2 and 7 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 221527-72:
(8*2)+(7*2)+(6*1)+(5*5)+(4*2)+(3*7)+(2*7)+(1*2)=106
106 % 10 = 6
So 221527-72-6 is a valid CAS Registry Number.