| alpha-hydroxy-3-nitro-alpha-toluenephosphonic aci diethyl ester |
| alpha-hydroxy-m-nitro-alpha-toluenephosphonic acid diethyl ester |
| (hydroxy(3-nitrophenyl)methyl)-phosphonic aci diethyl ester |
| alpha-hydroxy-3-nitro-alpha-toluenephosphonic acidiethyl ester |