The given chemicals are a series of oxygenated derivatives of D-glucitol, a sugar alcohol. The first two, O2 and O4, likely represent di- and tetra-oxygenated forms of D-glucitol, respectively. The third and fourth chemicals, O3 and O5, are more complex, indicating tri- and penta-oxygenated forms of D-glucitol, respectively, with a dibenzylidene group (Ξ,Ξ) bridging the 1,6 positions. This dibenzylidene group suggests the presence of a double bond between two benzyl groups, which are attached to the 1 and 6 positions of the D-glucitol molecule. Additionally, these compounds are dichloro derivatives, meaning they have two chlorine atoms replacing two hydroxyl groups in the molecule. The term "dideoxy" indicates that two of the hydroxyl groups have been removed from the parent D-glucitol structure. These compounds are likely to have unique chemical and physical properties due to their complex oxygenation and substitution patterns.
The CAS Registry Mumber 7284-25-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,2,8 and 4 respectively; the second part has 2 digits, 2 and 5 respectively. Calculate Digit Verification of CAS Registry Number 7284-25: (6*7)+(5*2)+(4*8)+(3*4)+(2*2)+(1*5)=105 105 % 10 = 5 So 7284-25-5 is a valid CAS Registry Number.