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Ethyl difluoroacetate Aminoacetaldehyde dimethyl acetal Methylaminoacetaldehyde dimethyl acetal N,N-Dimethylethylamine 2,2-Diethoxyethylamine 4-(2,2-DIETHOXYETHYL)MORPHOLINE PHTHALIMIDOACETALDEHYDE DIETHYL ACETAL 1-Pyrrolidineacetaldehydediethylacetal 1,3,4,6-TETRA-O-ACETYL-2-DEOXY-2-PHTHALIMIDO-BETA-D-GLUCOPYRANOSE BETAINEALDEHYDE DIETHYLACETAL IODIDE