99841-39-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 99841-39-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,8,4 and 1 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 99841-39:
(7*9)+(6*9)+(5*8)+(4*4)+(3*1)+(2*3)+(1*9)=191
191 % 10 = 1
So 99841-39-1 is a valid CAS Registry Number.