Optically-active 2-amino-phosphonoalkane acid, optically-active 2-amino-phosphonoalkane acid salt, and hydrates of these

A D-2-amino-phosphonoalkanoic acid salt or a hydrate of the salt, represented by Formula (1-1′-B):

• wherein m′ represents 1, 3, or 5;
• t represents a number of 0 to 5;
• Bs represents an optically active basic compound;
• and the asterisk marks an asymmetric atom,
• wherein when m′ is 1 in Formula (1-1′-B), the optically active basic compound is selected from the group consisting of a cinchonine, a quinidine, a cinchonidine, an optically active arginine, an optically active p-hydroxyphenylglycine hydrazide, an optically active phenylalaninamide, and an optically active ornithine,
• when m′ is 3 in Formula (1-1′-B), the optically active basic compound is selected from the group consisting of an optically active tyrosine hydrazide, an optically active 1-phenylpropylamine, an optically active valinol, an optically active p-hydroxyphenylglycine methyl ester, an optically active phenylalaninamide, an optically active p-hydroxyphenylglycine hydrazide, and an optically active p-hydroxyphenylglycine ethyl ester, and
• when m′ is 5 in Formula (1-1′-B), the optically active basic compound is selected from the group consisting of an optically active glucamine, an optically active valinol, an optically active leucinol, an optically active 1-phenylethylamine, an optically active p-hydroxyphenylglycine hydrazide, and an optically active 2-amino-1-butanol.