1904-61-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1904-61-6 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,9,0 and 4 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1904-61:
(6*1)+(5*9)+(4*0)+(3*4)+(2*6)+(1*1)=76
76 % 10 = 6
So 1904-61-6 is a valid CAS Registry Number.