... > SECTION VI - PRODUCTS OF THE CHEMICAL OR ALLIED INDUSTRIES > CHAPTER 29 - ORGANIC CHEMICALS > VI. KETONE-FUNCTION COMPOUNDS AND QUINONE-FUNCTION COMPOUNDS > 2914 Ketones and quinones, whether or not with other oxygen function, and their halogenated, sulphonated, nitrated or nitrosated derivatives > Cyclanic, cyclenic or cycloterpenic ketones without other oxygen function > Ionones and methylionones