445307-21-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 445307-21-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,4,5,3,0 and 7 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 445307-21:
(8*4)+(7*4)+(6*5)+(5*3)+(4*0)+(3*7)+(2*2)+(1*1)=131
131 % 10 = 1
So 445307-21-1 is a valid CAS Registry Number.