203789-47-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 203789-47-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,3,7,8 and 9 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 203789-47:
(8*2)+(7*0)+(6*3)+(5*7)+(4*8)+(3*9)+(2*4)+(1*7)=143
143 % 10 = 3
So 203789-47-3 is a valid CAS Registry Number.