1203683-15-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1203683-15-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,0,3,6,8 and 3 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1203683-15:
(9*1)+(8*2)+(7*0)+(6*3)+(5*6)+(4*8)+(3*3)+(2*1)+(1*5)=121
121 % 10 = 1
So 1203683-15-1 is a valid CAS Registry Number.