| CAS登錄號 | 中文名 | 英文名 | 分子結構式 | 分子式 | 詳情 | 供應商 |
| 2964-00-3 | Butanedioic acid,2-methylene-, ion(2-); Butanedioicacid, methylene-, ion(2-) (9CI); Succinic acid, methylene-, ion(2-) (8CI) |  | C5H4O4 | 詳情 | 供應商 | |
| 405512-01-8 | Pentanal, 2,3,4-trioxo-; Pentanal, 2,3,4-trioxo- (9CI) |  | C5H4O4 | 詳情 | 供應商 | |
| 10521-08-1 | 2H-Pyran-2,4,6(3H,5H)-trione; Glutaricanhydride, 3-oxo- (6CI,7CI,8CI); Acetone dicarboxylic acid anhydride; Pyran-2,4,6-trione; b-Ketoglutaric anhydride |  | C5H4O4 | 詳情 | 供應商 | |
| 585-68-2 | 3-Furancarboxylic acid,4,5-dihydro-5-oxo-; 3-Furoicacid, 4,5-dihydro-5-oxo- (8CI); Succinic acid, hydroxymethylene-, g-lactone (7CI); Aconic acid; Butanedioic acid, (hydroxymethylene)-, g-lactone |  | C5H4O4 | 詳情 | 供應商 | |
| 32804-68-5 | 2,3-Pentadienedioicacid; Pentadienedioicacid (6CI,7CI,8CI); (RS)-2,3-Pentadienedioic acid; 1,3-Dicarboxyallene; Allene-1,3-dicarboxylic acid; Glutinic acid |  | C5H4O4 | 詳情 | 供應商 | |
| 89282-32-6 | 4H-Pyran-4-one,2,6-dihydroxy-; 4H-Pyran-4-one,2,6-dihydroxy-(7CI) |  | C5H4O4 | 詳情 | 供應商 | |
| 488-18-6 | 4H-Pyran-4-one,3,5-dihydroxy-; Rubiginol |  | C5H4O4 | 詳情 | 供應商 | |
| 154161-79-2 | SQUARAIN-CARBOXYLATE*; squarain-carboxylate80+%; sq-1-oh |  | C5H4O4 | 詳情 | 供應商 |