A compound of the invention is a specific compound having a phosphorylcholine group, and a polymer of the invention comprises at least 1 mol % of repeating units with a phosphorylcholine group and has a number-average molecular weight of 1,000 or more, the repeating units with a phosphorylcholine group being represented by the formula (II):
wherein A is a bond selected from a single bond, —O—, —COO—, —OOC—, —CONH—, —NH—, —NHCO—, —NR
2
— and —CH
2
O— where R
2
is an alkyl group having 1 to 6 carbon atoms; and m is an integer of 1 to 12.
本发明的化合物是具有
磷酰
胆碱基团的特定化合物,而本发明的聚合物包含至少1摩尔%的重复单元,具有
磷酰
胆碱基团,并且具有1,000或更高的数均分子量,具有
磷酰
胆碱基团的重复单元由公式(II)表示:其中A是从单键,-O-,-COO-,-OOC-,-CONH-,-NH-,-NHCO-,-NR2-和-
CH2O-中选取的键,其中R2是具有1至6个碳原子的烷基基团;而m是1至12的整数。