1,2:3,4-Di-o-isopropylidene-alpha-D-galacto-hexadialdo-1,5-pyranose CAS 4933-77-1
| CAS No. | 4933-77-1 |
| Molecular Formula | C12H18O6 |
| Molecular Weight | 258.27 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 258.27 g/mol gives 1,2:3,4-Di-o-isopropylidene-alpha-D-galacto-hexadialdo-1,5-pyranose distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
1,2:3,4-Di-o-isopropylidene-alpha-D-galacto-hexadialdo-1,5-pyranose (CAS 4933-77-1) is a high-purity analytical reference standard with the molecular formula C12H18O6 and a molecular weight of 258.27 g/mol.
Based on its molecular formula C12H18O6, 1,2:3,4-Di-o-isopropylidene-alpha-D-galacto-hexadialdo-1,5-pyranose contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 258.27 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 1,2:3,4-Di-o-isopropylidene-alpha-D-galacto-hexadialdo-1,5-pyranose meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C12H18O6 |
| Molecular Weight | 258.27 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
Recommended Standards
- 1,2,4-Trimethoxydibenzo[b,d]furan (CAS 88256-09-1)
- 1,2:4,5-Bis-O-(1-methylethylidene)-β-L-erythro-2,3-hexodiulo-2,6-pyranose (CAS 198965-05-8)
- 1,2,3-Trimethoxydibenzo[b,d]furan (CAS 88256-08-0)
- 1,2:5,6-Di-O-isopropylidene-α-D-ribo-hexofuranose-3-ulose (mixture of keto and ketal forms) (CAS 2847-00-9)
- 1-(Dicyanomethylene)-4,4,6-trimethyl-2-oxo-1,2-dihydro-4H-pyrrolo[3,2,1-ij]quinolin-8-yl 3,4,5-trimethoxybenzoate (CAS 689754-64-1)
- 1-(p-Tolyl)-1H-pyrazole-4-carboxylic acid (CAS 1053085-48-5)
- 4-Methyl-1-(5-methylfuran-2-yl)pentane-1,3-dione (CAS 1340301-90-7)
- L-Phenyl-d5-alanine-2,3,3-d3-N-FMOC (CAS 1353853-39-0)
- Cefradine Impurity 18 (CAS CATO-C4X-121518)
- 5-Amino-2-(pyrazin-2-yl)oxazole-4-carbonitrile (CAS 907962-52-1)
- 3-Methoxy-N-((1-(2,2,2-trifluoroethyl)-1H-pyrazol-4-yl)methyl)propan-1-amine hydrochloride (CAS 1856036-56-0)
- 6-Oxooctanoic acid (CAS 4233-57-2)
- N-(3,4-dimethoxybenzyl)pentan-3-amine (CAS 586394-99-2)
- Acetyl tetrapeptide-3 (CAS 827306-88-7)
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