1403656-18-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1403656-18-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,0,3,6,5 and 6 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1403656-18:
(9*1)+(8*4)+(7*0)+(6*3)+(5*6)+(4*5)+(3*6)+(2*1)+(1*8)=137
137 % 10 = 7
So 1403656-18-7 is a valid CAS Registry Number.