英文别名ROXA-029; Roxadustat Impurity; methyl 2-(((N-(2-methoxy-2-oxoethyl)-4-methylphenyl)sulfonamido)methyl)-4-phenoxybenzoate; Benzoic acid, 2-[[(2-methoxy-2-oxoethyl)[(4-methylphenyl)sulfonyl]amino]methyl]-4-phenoxy-, methyl ester; Roxadustat Impurity 24; Roxadustat Impurity 30