| CAS No. | 199926-38-0 |
| Molecular Formula | C4H4O6 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 166.09 g/mol gives 199926-38-0 7166AF C4H4O6.H2O Dihydroxyfumaric acid hydrate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
199926-38-0 7166AF C4H4O6.H2O Dihydroxyfumaric acid hydrate (CAS 199926-38-0) is a high-purity analytical reference standard with the molecular formula C4H4O6H2O and a molecular weight of 166.09 g/mol.
Owing to a carbohydrate-derived structure, 199926-38-0 7166AF C4H4O6.H2O Dihydroxyfumaric acid hydrate is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 166.09 g/mol — guide the selection of appropriate sample preparation and analytical techniques.
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.
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 | C4H4O6 H2O |
| Molecular Weight | 166.09 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 2014 |