The present invention provides a type I crystal of (E)-2-(7-trifluoromethyl-chroman-4-ylidene)-N-((7R)-7-hydroxy-5,6,7,8-tetrahydronaphthalen-1-yl)acetamide having excellent TRPV1 antagonistic activity, a drug and a pharmaceutical composition containing this crystal, and a method for producing the crystal. The present invention provides a type I crystal of (E)-2-(7-trifluoromethyl-chroman-4-ylidene)-N-((7R)-7-hydroxy-5,6,7,8-tetrahydronaphthalen-1-yl)acetamide that is excellent in at least one feature selected from the group consisting of storage stability, photostability and thermodynamic stability, that can be preferably obtained with industrially high reproducibility, yield and purity, and that is useful as a crystal of an active pharmaceutical ingredient.
本发明提供了一种具有优异TRPV1拮抗活性的(E)-2-(7-三
氟甲基-苯并二氢
吡喃-4-亚基)-N-((7R)-7-羟基-5,6,7,8-四氢
萘-1-基)乙酰胺的I型晶体、含有该晶体的药物和药物组合物,以及生产该晶体的方法。本发明提供了(E)-2-(7-三
氟甲基-苯并二氢
吡喃-4-亚基)-N-((7R)-7-羟基-5,6,7,8-四氢
萘-1-基)乙酰胺的Ⅰ型晶体,该晶体至少在选自贮存稳定性、光稳定性和热力学稳定性的组中的一个特征方面具有优异的性能,最好能以工业上较高的重现性、产率和纯度获得,并且可用作活性药物成分的晶体。