3,10-dioxo-1,2-diphenyl-2a,3,3a,4,9,9a,10,10a-octahydro-4,9-o-benzenocyclobutanthracene is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 84438-11-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,4,4,3 and 8 respectively; the second part has 2 digits, 1 and 1 respectively. Calculate Digit Verification of CAS Registry Number 84438-11: (7*8)+(6*4)+(5*4)+(4*3)+(3*8)+(2*1)+(1*1)=139 139 % 10 = 9 So 84438-11-9 is a valid CAS Registry Number.