Paxidal, a sesquiterpene dialdehyde cinnamate
constituent, has been identified as a main active constituent.
The particles formed from PVCi with high cinnamates
The list of acceptable additives includes benzopheneones (oxybenzone), cinnamates
and cinoxate), sulisobenzone, salicylates, titanium dioxide and avobenzone (Parsol 1789).
and resveratrol content for sparkling wine characterization.
In addition, chemicals in externally applied substances--including colognes and after-shave lotions, soaps formulated with halogenated bacteriostatic agents and even some sunscreens, especially those containing paraaminobenzoic acid (PABA), PABA esters, cinnamates
and benzophenones--can cause a photosensitive reaction.
Although DHPPG is a phenylpropanoid derivative and, as such, is probably synthesized from cinnamates
, its synthesis is separated by several steps from flavone synthesis [ILLUSTRATION FOR FIGURE 8 OMITTED].
Contact dermatitis, and photosensitivity has also been associated with cinnamates
and oxybenzone (Nicol, 1989).
Some common ingredients are PABA esters, benzophenones, cinnamates
, salicylates and anthranilates.
Other common and effective sunscreen ingredients are cinnamates
(such as octyl methoxycinnamate) and salicylates.
Once the European ingredients that are designed on the Dalton 500 rule are approved in the US, the need for some of the small molecule UV filters such as the cinnamates
, salicylates and benzophenones would decline rapidly.
Most products contain two types of sunscreen - chemicals such as cinnamates
which absorb UV light, reducing the amount that reaches the skin and "reflectors", derived from minerals such as titanium dioxide and zinc oxide which deflect sunlight away from the skin.
The spectra of alkyl 4-alkoxyphenyl cinnamates
are almost identical in solution to those of the analogous aryl esters suggesting the aryl esters are twisted even in solution.