An N -acetylglucosamine sugar chain group-containing compound which can easily reach cells/sites on which a vimentin and/or desmin protein(s) is/are exposed, which compound has excellent affinity to N -acetylglucosamine sugar chain-recognizing proteins a drug delivery carrier compound comprising the compound a preparation using the drug delivery carrier compound and a drug delivery system are provided. These are an N- acetylglucosamine sugar chain group-containing compound having a weight average molecular weight within the range of 15,000 to 100,000 a drug delivery carrier compound comprising the compound a preparation using the drug delivery carrier compound and a drug delivery system
