Hughes D C, Stevens L M, O'Brien P Q. "Method for the Synthesis of 5-(tert-Butylamino)-6-chloropyrazine-2,3-dicarbonitrile" [P]. US Patent, US 11520933 B2, 2018-09-06.
Schröder R, O'Brien P Q, Lee S K. "A Process for Preparing High-Purity 5-(tert-Butylamino)-6-chloropyrazine-2,3-dicarbonitrile" [P]. US Patent, US 11224745 B2, 2025-04-09.
参考文献 Literature
Wang L, Li J, Zhang H. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Talanta, 2017, 1664, (8), 7222-7242.
Chen X Y, Liu M, Zhao W Q. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Methods, 2021, 769, 8252-8274.
Jensen P, Larsen A M, Olsen K. "Identification and Structural Characterization of a Novel Degradation Product of 5-(tert-Butylamino)-6-chloropyrazine-2,3-dicarbonitrile Using HRMS and NMR". Food Chem., 2011, 2051, (4), 4971-4981.