45.1 Product Class 1: Cyclopropenium Salts, Cyclopropenones and Heteroatom Analogues, and Cyclopropenyl Radicals and Anions
45.2 Product Class 2: Cyclobutadienes, Cyclobutenediones, and Squaric Acids
45.3 Product Class 3: Cyclopentadienyl Anions, Cyclopentadienones, and Heteroatom Analogues
45.4 Product Class 4: Benzene and Alkylbenzenes
45.5 Product Class 5: Styrenes, Stilbenes, and Other Alk-1-enylbenzenes
45.6 Product Class 6: Annulated Benzenes (1H-Cyclopropabenzenes, 1,2-Dihydrocyclobutabenzenes, Indanes, and Indenes)
45.7 Product Class 7: Cycloheptatrienylium (Tropylium) Salts, Tropones, Tropolones, and Heteroatom Analogues
45.8 Product Class 8: Cyclooctatetraenes
45.9 Product Class 9: Nine-Membered and Higher Annulenes and Related Ions
45.10 Product Class 10: Fulvenes
45.11 Product Class 11: Dimethylenecyclobutenes and Quinodimethanes
45.12 Product Class 12: Radialenes
