73841-61-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 73841-61-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,3,8,4 and 1 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 73841-61:
(7*7)+(6*3)+(5*8)+(4*4)+(3*1)+(2*6)+(1*1)=139
139 % 10 = 9
So 73841-61-9 is a valid CAS Registry Number.