2103-35-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2103-35-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,1,0 and 3 respectively; the second part has 2 digits, 3 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 2103-35:
(6*2)+(5*1)+(4*0)+(3*3)+(2*3)+(1*5)=37
37 % 10 = 7
So 2103-35-7 is a valid CAS Registry Number.