4-methylcyclohexene, 3-methylcyclohexene and 1-methylcyclohexene which is the major product because it is trisubstituted as opposed to the first two which are only disubstituted
2Methyl-1-propanol is isobutanol...I dont know for what purpose you want to replace this with isoproponol.
Hexane is a 6 carbon chain. starting at one end, number the carbons 1 - 6. 2-methyl 3-chloro means that the methyl group attaches to carbon 2, and the chlorine attaches to carbon 3. 3-methyl 2-chloro would simply be the other way around. They are two unique and different compounds.
According to the label it's 2-hydroxy-2methyl-1-phenyl-1-propanone and 1,6-hexanediol diacrylate. The hydroxy propanone acts as a photo-initiator that causes the diacrylate to polymerize.