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19, 27, 92], 'trifluoroacetamide': [4, 11], '(BSTFA': [5], '和': [7, 16, 30, 33, 83], 'N-methyl-N': [8], '(trimethylsily': [9], '(MSTFA': [12], '是在象雌素酉同(El': [14], '17a-ethinylestradiol': [17], '(EE2': [18], '那样的雌激素类固醇的': [20], 'GCMS': [21, 80], '分析使用的普通': [22], 'derivatization': [23, 44, 54, 66, 86], '试剂。在这研究,三': [24], 'trimethylsilyl': [25], '(TMS': [26], '类固醇衍生物,': [28], 'mono-trimethylsilyl': [29, 34], 'di-trimethylsilyl': [31], 'EE2': [32, 42, 64, 84], 'El,与': [35], 'BSTFA': [36, 58, 62, 76, 88], '或': [37, 39, 77], 'MSTFA': [38, 74, 78], 'GC': [40, 70, 72], '分离在': [41], '的': [43, 65, 81], '期间被观察。影响多重': [45], 'TMS': [46, 56, 68], '衍生物和他们的相对丰富的生产的因素被检验。当与': [47], 'silylation': [48], '试剂反应时,甲醇和二度酚': [49], 'A': [50, 60], '与雌激素的': [51], 'esteroids': [52], '竞争了,这被发现,并且因此在': [53], '产品影响了': [55], '衍生物和他们的相对丰富的形成。甲醇被发现比有': [57], '试剂的二度酚': [59], '更反应。任何一个都不能与': [61], '在': [63], '期间在这研究测试的三溶剂阻止多重': [67], '衍生物的产生,由': [69], '分析列在后面。当衍生物试剂由': [71], '分析列在后面,类似的结果用': [73], '被观察。因此,在这里报导的条件下面,': [75], '的适用性作为为由': [79], 'El': [82], '的决心的': [85], '试剂可疑。这个问题能被在推荐的': [87], '试剂增加': [89], 'trimethylsilylimidaz': [90], '(TMSI': [91], '解决,并且方法的表演在这研究被证明了': [93]}, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W3143729552', 'counts_by_year': [{'year': 2014, 'cited_by_count': 1}], 'updated_date': '2024-09-15T08:07:46.649452', 'created_date': '2021-04-13'}