amino-[[5-(carbamoyloxymethyl)furan-2-yl]methoxycarbonylamino]-oxophosphanium;azane;[5-(tert-butylcarbamoyloxymethyl)furan-2-yl]methyl N-tert-butylcarbamate;[5-(carbamoyloxymethyl)furan-2-yl]methyl carbamate;[5-(carbamoyloxymethyl)furan-2-yl]methyl methyl carbonate;[5-[(chloroimino-lambda3-chloranyl)carbonyloxymethyl]furan-2-yl]methyl (chloroimino-lambda3-chloranyl)formate;diamino(oxo)phosphanium;ethyl N-[[5-(ethoxymethylidenecarbamoyloxymethyl)furan-2-yl]methoxycarbonyl]methanimidate;[5-[(4-formylphenyl)carbamoyloxymethyl]furan-2-yl]methyl N-(4-formylphenyl)carbamate;[5-(2-methylprop-2-enoylcarbamoyloxymethyl)furan-2-yl]methyl N-(2-methylprop-2-enoyl)carbamate;[5-(sulfinylcarbamoyloxymethyl)furan-2-yl]methyl N-sulfinylcarbamate;[5-[(2,2,2-trifluoroacetyl)carbamoyloxymethyl]furan-2-yl]methyl N-(2,2,2-trifluoroacetyl)carbamate