56581-77-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 56581-77-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,6,5,8 and 1 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 56581-77:
(7*5)+(6*6)+(5*5)+(4*8)+(3*1)+(2*7)+(1*7)=152
152 % 10 = 2
So 56581-77-2 is a valid CAS Registry Number.