177989-41-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 177989-41-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,7,9,8 and 9 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 177989-41:
(8*1)+(7*7)+(6*7)+(5*9)+(4*8)+(3*9)+(2*4)+(1*1)=212
212 % 10 = 2
So 177989-41-2 is a valid CAS Registry Number.