157443-41-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 157443-41-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,4,4 and 3 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 157443-41:
(8*1)+(7*5)+(6*7)+(5*4)+(4*4)+(3*3)+(2*4)+(1*1)=139
139 % 10 = 9
So 157443-41-9 is a valid CAS Registry Number.