L-胱氨酸酸单水合物(CAM)是一种活性内源性代谢物。
化学性质L-Cysteic acid monohydrate 为无色结晶体,含一分子结晶水者为针状晶体。无水物在260℃分解。该物质能溶于水而不溶于醇。
用途主要用于有机合成。
生产方法将胱氨酸溶于稀盐酸中,滴加溴,并使反应液温度升至约60℃左右。随后,在减压下蒸发反应液,将剩余物溶解在蒸馏水中,过滤掉不溶物。滤液浓缩后冷却结晶,然后过滤,用乙醇洗涤滤饼并干燥,最终得到L-磺基丙氨酸,产率可达81%-90%。
Single crystal X-ray structures have been obtained for [Ag(L-cysteic acid)][Formula: see text] (1) and [Ag(L-cysteic acid)(H2O)][Formula: see text] (2) These compounds represent the first two structurally characterized complexes of cysteic acid. Network 1 is shown to adopt an infinite two-dimensional structure, describable as one-dimensional ribbons cross-linked into layers. The basic building block is a doubly carboxylate-bridged silver(I) dimer. Compound 1 crystallizes in the monoclinic space group P21 (a = 5.5066(3) Å, b = 7.5761(4) Å, c = 16.644(1) Å, β = 94.335(1)°). Compound 2, while differing chemically from 1 by only one water molecule, forms a three-dimensional structure built upon the same core dimer unit as that observed in 1. In 2, these units assemble in a different manner via the weak interactions and form a channel structure in which the guest water molecules are included. Compound 2 crystallizes in the monoclinic space group P21 (a = 8.120(2) Å, b = 9.805(2) Å, c = 9.204(2) Å, β = 98.45(3)°).Key words: silver, carboxylates, sulfonates, coordination polymer.