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4-((3-Pyridinylcarbonyl)amino)butanoic acid34562-97-5 4-(Dodecyloxy)benzoic acid2312-15-4 4-(Methylsulfonyl)-2-nitrobenzoic acid110964-79-9 4-(Pyridin-4-yl)benzoic acid4385-76-6 4-(Trifluoromethyl)benzeneacetic acid32857-62-8 4-(Trifluoromethyl)benzoic acid455-24-3 4-(Trifluoromethyl)mandelic acid395-35-7 4-Acetyl-1-naphthalenecarboxylic acid131986-05-5 4-Amino-2-hydroxybutanoic acid13477-53-7 4-Bromobutanoic acid2623-87-2 4-Chloro-2-methylbenzoic acid7499-07-2 4-Chloro-3-nitrobenzoic acid96-99-1 4-Chloro-3,5-dinitrobenzoic acid118-97-8 4-Chlorophthalic acid89-20-3 4-Chlorosalicylic acid5106-98-9 4-Ethoxybenzenepropanoic acid4919-34-0 4-Ethylbenzoic acid619-64-7 4-Fluoro-3-nitrobenzoic acid453-71-4 4-Guanidinobenzoic acid hydrochloride42823-46-1 4-Methyl-3,5-dinitrobenzoic acid16533-71-4