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98541-64-1 Boc-L-Serine-beta-Lactone N-叔丁氧羰基-L-丝氨酸(Β-内酯)
126330-77-6 Boc-D-Serine-beta-Lactone N-叔丁氧羰基-D-丝氨酸(Β-内酯)
149572-97-4 (R)-3-Amino-1-oxetanone p-toluenesulfonic acid salt (R)-3-氨基-2-氧杂环酮对甲苯磺酸
112839-95-9 (S)-3-Amino-2-oxetanone p-toluenesulfonic acid salt (S)-3-氨基-2-氧杂环酮对甲苯磺酸