4-Chloro-5,6-dihydro-2H-pyran-3-carboxylic acid CAS 1541667-98-4
| CAS No. | 1541667-98-4 |
| Molecular Formula | C6H7ClO3 |
| Molecular Weight | 162.57 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C6H7ClO3, 4-Chloro-5,6-dihydro-2H-pyran-3-carboxylic acid contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 162.57 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).
4-Chloro-5,6-dihydro-2H-pyran-3-carboxylic acid (CAS 1541667-98-4), molecular formula C6H7ClO3 and molecular weight 162.57 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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.
Physical & Chemical Properties
| Molecular Formula | C6H7ClO3 |
| Molecular Weight | 162.57 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1992 |
| Halogen Content | Cl-containing |
Related Chloro Standards
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Recommended Standards
- (S)-6-(Chloromethyl)dihydro-2H-pyran-2,4(3H)-dione (CAS 135999-58-5)
- 1-(2-Chloroacetyl)imidazolidin-2-one (CAS 57013-09-9)
- 2-(chloromethyl)-5-(methoxymethyl)-1,3,4-oxadiaZole (CAS 1248308-40-8)
- 1-(2-Chloroacetyl)pyrazolidin-3-one (CAS 205829-17-0)
- (2R)-1,1-difluoro-2-palmitoyloxy-3-phosphopropane (CAS 474329-47-0)
- 2-(4-Trifluoromethylphenoxy)pyridine-5-boronic acid (CAS 1256358-58-3)
- 1-Phenylpyrrolidine-2,4-dione (CAS 114473-81-3)
- 2-Cyclohexylpyrimidine-5-carboxylic acid (CAS 933989-89-0)
- {4-[(2-methyl-1h-imidazol-1-yl)methyl]phenyl}methanamine (CAS 954578-11-1)
- 2-(4-fluorophenyl)-5-(trimethylsilyl)-1,3,4-oxadiazole (CAS 890405-12-6)
- Relugolix Impurity 68 (CAS CATO-C4X-242968)
- 5-fluoro-2-methyl-6-nitro-1,3-benzothiazole (CAS 203340-21-0)
- 8-Chloro-3-methylimidazo[1,2-a]pyridine-2-carboxylic acid (CAS 1159827-25-4)
- Mast Cell Degranulating (MCD) Peptide HR-2 (CAS 80388-04-1)
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