442159-39-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 442159-39-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,4,2,1,5 and 9 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 442159-39:
(8*4)+(7*4)+(6*2)+(5*1)+(4*5)+(3*9)+(2*3)+(1*9)=139
139 % 10 = 9
So 442159-39-9 is a valid CAS Registry Number.