| CAS No. | 4100-80-5 |
| Molecular Formula | C5H6O3 |
| Molecular Weight | 114.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
4100-80-5 2,5-Furandione, dihydro-3-methyl- Methylsuccinic anhydride Succinic anhydride, methyl- (8CI) AI3-11208 EINECS 223-870-5 2-Methylsuccinic anhydride 3-Methylsuccinic anhydride NSC 65437 Pyrotartaric anhydride (CAS 4100-80-5), molecular formula C5H6O3 and molecular weight 114.10 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C5H6O3, 4100-80-5 2,5-Furandione, dihydro-3-methyl- Methylsuccinic anhydride Succinic anhydride, methyl- (8CI) AI3-11208 EINECS 223-870-5 2-Methylsuccinic anhydride 3-Methylsuccinic anhydride NSC 65437 Pyrotartaric anhydride contains a carboxylic acid group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 114.10 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
| Molecular Formula | C5H6O3 |
| Molecular Weight | 114.10 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1958 |