401637-68-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 401637-68-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,0,1,6,3 and 7 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 401637-68:
(8*4)+(7*0)+(6*1)+(5*6)+(4*3)+(3*7)+(2*6)+(1*8)=121
121 % 10 = 1
So 401637-68-1 is a valid CAS Registry Number.