41771-57-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 41771-57-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,1,7,7 and 1 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 41771-57:
(7*4)+(6*1)+(5*7)+(4*7)+(3*1)+(2*5)+(1*7)=117
117 % 10 = 7
So 41771-57-7 is a valid CAS Registry Number.