Niccolò Cosottini et al. “Self-healing low-molecular-weight hydroxamic acid hydrogel for active pharmaceutical ingredient formulation.” ChemRxiv (). https://doi.org/10.26434/chemrxiv.15007568/v1

Low-molecular-weight hydroxamic acid gelator DBS-CONHOH
Identifier DBS-CONHOH
¹H NMR (400 MHz, DMSO-d₆) δ 11.25 (s, 2H, NH), 9.05 (s, 2H, NH-OH), 7.78-7.73 (m, 4H, ArH), 7.55-7.48 (m, 4H, ArH), 5.71 (s, 2H, Ar-CH), 4.92 (br, 1H, CHOH), 4.46 (br, 1H, CH2OH), 4.25-4.24 (m, 3H (overlap), sugar) 3.98 (s, 1H, sugar), 3.89-3.83 (m, 1H, sugar), 3.80-3.73 (m, 1H, sugar), 3.63-3.56 (m, 1H, sugar), 3.48-3.40 (m, 1H, sugar)
¹³C NMR (400 MHz, DMSO-d₆) δ 163.94 (CONHOH), 141.37 (aromatic p-C), 141.10 (aromatic p-C), 133.04 (aromatic C), 132.96 (aromatic C), 126.71 (aromatic o-C), 126.63 (aromatic o-C), 126.16 (aromatic m-C, overlap), 98.77 (Ph-CH), 98.70 (Ph-CH), 77.68 (CH), 70.13 (CH), 69.34 (CH2), 68.48 (CH), 67.68 (CH), 62.61 (CH2)
ESI-MS m/z calc. for C₂₄H₂₄N₂NaO₄ 499.1323; found 499.1336 (100 %, [M+Na]⁺)
IR νmax (cm⁻¹) (solid) 3372w, 3170m, 3071m, 3027m, 2940m, 2878m, 1680m, 1613s, 1569m, 1536m, 1505w, 1450vw, 1398m, 1339m, 1310m, 1259w, 1221w, 1160m, 1088vs, 1061m, 1015vs, 1002s, 979m, 894m, 884m, 849m, 832m, 741m, 685m, 655m, 600m, 588m, 550m, 520w, 463vw
Melting point 183-185 °C