53442-91-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 53442-91-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,3,4,4 and 2 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 53442-91:
(7*5)+(6*3)+(5*4)+(4*4)+(3*2)+(2*9)+(1*1)=114
114 % 10 = 4
So 53442-91-4 is a valid CAS Registry Number.