71872-34-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 71872-34-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,8,7 and 2 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 71872-34:
(7*7)+(6*1)+(5*8)+(4*7)+(3*2)+(2*3)+(1*4)=139
139 % 10 = 9
So 71872-34-9 is a valid CAS Registry Number.