1858-01-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1858-01-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,8,5 and 8 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1858-01:
(6*1)+(5*8)+(4*5)+(3*8)+(2*0)+(1*1)=91
91 % 10 = 1
So 1858-01-1 is a valid CAS Registry Number.