443991-67-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 443991-67-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,4,3,9,9 and 1 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 443991-67:
(8*4)+(7*4)+(6*3)+(5*9)+(4*9)+(3*1)+(2*6)+(1*7)=181
181 % 10 = 1
So 443991-67-1 is a valid CAS Registry Number.