2-Amino-3-hydroxy-4-chlorobenzoic acid
2-Amino-3-hydroxy-4-chlorobenzoic acid ??
??
2-Amino-3-hydroxy-4-chlorobenzoic acid C??? ??, ??, ??
2-Amino-3-hydroxy-4-chlorobenzoic acid ?? ?? ? ???
???
?? ??
2-Amino-3-hydroxy-4-chlorobenzoic acid ?? ??
???( 0)?? ??