Its structure is characterized, for example, by a 2-0-sulfo-4-enepyranosuronic acid group at the non-reducing end and a 2-N,6-0-disulfo-D-glucosamine at the reducing end of the chain.
这是伊诺肝素的结构特征，不知道enepyranosuronic acid的中文怎么说，另外2-0-sulfo-中的0是否指“氧”？sulfo是硫基还是磺基？

各位指点！