303771-25-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 303771-25-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,0,3,7,7 and 1 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 303771-25:
(8*3)+(7*0)+(6*3)+(5*7)+(4*7)+(3*1)+(2*2)+(1*5)=117
117 % 10 = 7
So 303771-25-7 is a valid CAS Registry Number.