300397-77-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 300397-77-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,0,0,3,9 and 7 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 300397-77:
(8*3)+(7*0)+(6*0)+(5*3)+(4*9)+(3*7)+(2*7)+(1*7)=117
117 % 10 = 7
So 300397-77-7 is a valid CAS Registry Number.