Reductase component of a two-component system that degrades 2,4,5-trichlorophenol. TftC provides the FADH(2) required by TftD. TftD oxidizes 2,4,5-trichlorophenol (2,4,5-TCP) to 2,5-dichloro-p-benzoquinone, which is chemically reduced to 2,5-dichloro-p-hydroquinone (2,5-DiCHQ). Then, TftD oxidizes the latter to 5-chloro-2-hydroxy-p-benzoquinone. FADH2 + NAD(+) = FAD + 2 H(+) + NADH Xenobiotic degradation. Homodimer. The chlorophenol-4-monooxygenase is composed of an oxygenase component TftD and a reductase component TftC. Belongs to the non-flavoprotein flavin reductase family.