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FTIR 光譜模式支持對含羰基的脂肪族有機材料(帶有甲基取代)的廣泛指派,但譜庫匹配本身非特異性,且沒有直接或相關的文獻證據能可靠地識別出具體物質。最強的樣品特徵包括1726 cm-1的類似酯或酮的羰基帶、2958和2873 cm-1的脂肪族C-H伸縮、1452和1382 cm-1的CH變形帶,以及1235、1160和1063 cm-1的多個強指紋區吸收,與含C-O的羰基化學一致。992、941、908、841和759 cm-1附近的吸收帶顯示額外的指紋結構,但若無更強的支持證據,不足以證明具體的實體主張。
建議的下一步: Verify whether the sample is an ester by checking for strong companion C-O bands in the full original spectrum and by comparing relative intensity around 1250-1050 cm-1. Inspect the raw spectrum for any weak N-H or O-H stretching features above 3000 cm-1 to test the library suggestion of N-H versus a purely oxygenated carbonyl material. Compare against targeted reference spectra for common aliphatic esters, ketones, and acrylate-type materials that absorb near 1726, 1235, 1160, and 1063 cm-1. If available, use complementary GC-MS or NMR to distinguish a single oxygenated organic compound from a mixture or formulated material.
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