41658-17-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 41658-17-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,1,6,5 and 8 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 41658-17:
(7*4)+(6*1)+(5*6)+(4*5)+(3*8)+(2*1)+(1*7)=117
117 % 10 = 7
So 41658-17-7 is a valid CAS Registry Number.