227605-57-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 227605-57-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,7,6,0 and 5 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 227605-57:
(8*2)+(7*2)+(6*7)+(5*6)+(4*0)+(3*5)+(2*5)+(1*7)=134
134 % 10 = 4
So 227605-57-4 is a valid CAS Registry Number.