Pfizer Handbook of Microbial Metabolites 192 



378 p-Methoxytetrachlorophenol (Drosophilin A), C7H4O2CI4, yellow 

 crystals, m.p. 118°, 



Drosophila subatrata (Batsch ex Fr. ) Quel. 



The yield was 100 mg. from 31 liters of culture solu- 

 tion. 



Frederick Kavanagh, Annette Hervey and William J. Rob- 

 bins, Proc. Natl. Acad. Sci. U. S. 38 555 (1952). 



379 p-Hydroxybenzoic Acid, CjHeOg, colorless crystals, m.p. 213°. 



COOH 



Penicillium patulum 



E. W. Bassett and S. W. Tanenbaum, Biochim. et Biophys. 

 Acta 28 247 (1958). 



380 Protocatechuic Acid, C7H6O4, white or tan crystalline powder 

 which darkens in air, m.p. —-200° (dec). Monohydrate 

 from water. 



COOH 



Phycomyces blakesleeanus (sugar substrate) 

 H. B. Schroter, Angew. Chem. 68 158 (1956). 



381 Gentisic Acid, C7H6O4, colorless crystals, m.p. 199°. 



°" COOH 



