Table 4. List of Disinfectants and Their Reactivity with Monomers of Virus Structures: Nucleotides and Amino Acids¹⁴⁹.

		disinfectant type
	nucleotides and amino acids	UVC (254 nm)	free chlorine	ozone
reactivity with nucleotides; second-order rate constant, k [M–1 s–1], reported for chlorine and ozone; molar attenuation coefficient, ε [M–1 cm–1], reported for UVC	adenine	1.2 × 104	6.4	200
	cytosine	3.5 × 103	66	1.4 × 103
	guanine	1.0 × 104	2.1 × 104	5.0 × 104
	uracil	7.8 × 103	5.5 × 103	650
	thymine	6.3 × 103	4.3 × 103	1.6 × 104
reactivity with amino acids; second-order rate constant, k [M–1 s–1], reported for chlorine and ozone; molar attenuation coefficient, ε [M–1 cm–1], reported for UVC	cysteine		3.0 × 107	∼1 × 109
	histidine		1.0 × 105	∼4 × 105
	lysine		5.0 × 103
	methionine		3.8 × 107	∼6 × 106
	phenylalanine	140
	tryptophan	2.8 × 103	1.1 × 104	∼1 x 107
	tyrosine	340	44	∼4 × 106
	backbone N		≤10
	α-amino		1.0 × 105