443638-71-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 443638-71-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,4,3,6,3 and 8 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 443638-71:
(8*4)+(7*4)+(6*3)+(5*6)+(4*3)+(3*8)+(2*7)+(1*1)=159
159 % 10 = 9
So 443638-71-9 is a valid CAS Registry Number.