51972-83-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 51972-83-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,1,9,7 and 2 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 51972-83:
(7*5)+(6*1)+(5*9)+(4*7)+(3*2)+(2*8)+(1*3)=139
139 % 10 = 9
So 51972-83-9 is a valid CAS Registry Number.