| http://www.w3.org/ns/prov#value | - They are preferably mono- or dicarbonyl compounds, such as benzoin and derivatives thereof, in particular benzoin methyl ether, benzil and benzil derivatives, for example 4,4-oxydibenzil, and other dicarbonyl compounds, such as diacetyl, 2,3-pentanedione and ??-diketo derivatives of norbornane and substituted norbornanes, metal carbonyls, such as pentacarbonylmanganese, or quinones, such as 9,10-p
|
