Park J H, Stevens L M, Chen K W. "Method for the Synthesis of (-)-3-Methoxy-6-oxo Butorphanol (1.0mg/ml in Acetonitrile)" [P]. US Patent, US 11800369 B2, 2024-07-01.
Kumar R, Stevens L M, Roberts E F. "A Process for Preparing High-Purity (-)-3-Methoxy-6-oxo Butorphanol (1.0mg/ml in Acetonitrile)" [P]. US Patent, US 9551990 B2, 2024-04-11.
参考文献 Literature
Yamamoto K, Tanaka H, Suzuki T. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chemosphere, 2021, 1000, (5), 6130-6143.
Lee J H, Choi Y S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chromatographia, 2014, 1955, 6086-6111.
Brown R C, Davis S M. "Identification and Structural Characterization of a Novel Degradation Product of (-)-3-Methoxy-6-oxo Butorphanol (1.0mg/ml in Acetonitrile) Using HRMS and NMR". Molecules, 2019, 802, (5), 8447-8450.