66624-25-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 66624-25-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,6,2 and 4 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 66624-25:
(7*6)+(6*6)+(5*6)+(4*2)+(3*4)+(2*2)+(1*5)=137
137 % 10 = 7
So 66624-25-7 is a valid CAS Registry Number.