207915-73-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 207915-73-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,7,9,1 and 5 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 207915-73:
(8*2)+(7*0)+(6*7)+(5*9)+(4*1)+(3*5)+(2*7)+(1*3)=139
139 % 10 = 9
So 207915-73-9 is a valid CAS Registry Number.