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Phenylalanine (US: /ËfÉnÉlËÃ¦lÉniËn/, UK: /ËfiËnaÉªlËÃ¦lÉniËn/; abbreviated as Phe or F) is an Î±-amino acid with the formula C. 9H. 11NO. 2. It can be viewed as a benzyl group substituted for the methyl group of alanine, or a phenyl group in place of a terminal hydrogen of alanine.
Tetrachloroethylene (PCE) is a nonflammable, liquid solvent widely used in dry cleaning, wood processing, fabric manufacturing, and metal degreasing. In homes, it may be found in suede protectors, paint removers, furniture stripper, water repellents, silicone lubricants, spot removers, glues, and wood cleaners.eople are most often exposed to PCE when they use it in their work, when cleaning or doing hobbies. Breathing: PCE evaporates into the air. People are commonly exposed to PCE by breathing air containing its vapors. PCE can contaminate home air when people use cleaning solvents or other products.