Gallic acid propyl ester

Gallic acid propyl ester N-propyl gallate propyl 3,4,5-trihydroxy-benzoate... 

SYNS GALLIC ACID, PROPYL ESTER NIPA 49 NIPAGALLIN P PROGALLIN P n-PROPYL ESTER of... 

E310 gallic acid propyl ester n-propyl gallate Progallin P propyl 3,4,5-trihydroxybenzoate Tenox PG. 

Synonyms Gallic acid propyl ester 3,4,5-Trihydroxybenzoic acid propyl ester Source Cortesi, A. Kikic, I. Alessi, P. Turtoi, G. Gamier, S. J. Supercrit. 

AI3-17136 Benzoic acid, 3,4,5-trihydroxy-, propyl ester CCRIS 541 EINECS 204498-2 FEMA No. 2947 Gallic acid, propyl ester HSDB 591 n-Propyl 3,4,5-trihydroxybenzoate n-Propyl ester of... 

Synonyms -propyl gallate 3,4,5-trihydroxybenzoic acid propyl ester gallic acid propyl ester Progallin P Tenox PG propyl 3,4,5-trihydroxybenzoate 3,4,5-trihydroxybenzene-i-propylcarboxylate -propyl ester of 3,4,5-trihydroxybenzoic acid n-propyl 3,4,5-trihydroxybenzoate Nipagallin P PG Nipa 49... 

Except for ET reactions with strong oxidants, 02 is not very reactive (for a compilation of rate constants, see Bielski et al. 1985). For example, practically no reaction has been detected with amino acids (Bielski and Shiue 1979), and there is no reaction to speak of with the DNA constituents, that is, it is also practically unreactive towards DNA. However, where substantial reactivity has been recognized, its main route of reaction seems to be by addition. This has not only been proposed for its reaction with pyrogallol and the propyl ester of gallic acid [k = 3.4 x 10s and 2.6 x 10s dm3 mol1 s 1, respectively cf. reactions (67)-(71) Deeble et al. 1987, 1988], but it seems that an addition reaction triggers a number of chain reactions (von Sonntag et al. 1993, see below). 

Classification Aromatic ester Definition Aromatic ester of propyl alcohol and gallic acid... 

Propyl (PG, E 310), octyl (OG, E 311), and dodecyl (or lauryl) (DG, E 312) esters of gallic acid, usually named alkyl gallates, form a part of the synthetic phenolic antioxidants, mainly used as food additives, with PG being the most frequently used alkyl gallate. The molecular structure of these compounds is composed of a hydrophilic head (phenolic ring) and a hydrophobic alkyl chain (Figure 14.1). PG is slightly soluble in water but OG and DG are insoluble in water. The three compounds are soluble in ethanol, ethyl ether, and oils. 

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