| 摘要 |
The present invention is directed to provide 17-cyclopropylmethyl-3,14²-dihydroxy-4,5±-epoxy-6²-[N-methyl-trans-3-(3-furyl)acrylamido]morphinan hydrochloride consistent in quality after production and having high purity. A crystal of 17-cyclopropylmethyl-3,14²-dihydroxy-4,5±-epoxy-6²-[N-methyl-trans-3-(3-furyl)acrylamido]morphinan hydrochloride including a A-form, B-form or C-form crystal thereof, and a process for producing the same are provided. |
