1604804-40-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1604804-40-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,0,4,8,0 and 4 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1604804-40:
(9*1)+(8*6)+(7*0)+(6*4)+(5*8)+(4*0)+(3*4)+(2*4)+(1*0)=141
141 % 10 = 1
So 1604804-40-1 is a valid CAS Registry Number.