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 earner 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.
