3,6-Dihydro-2H-pyran-4-carboxylic acid CAS 99338-32-6
| CAS No. | 99338-32-6 |
| Molecular Formula | C6H8O3 |
| Molecular Weight | 128.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, 3,6-Dihydro-2H-pyran-4-carboxylic acid is typically white to off-white liquid. Its solid-state physicochemical attributes — including a molecular weight of 128.13 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
3,6-Dihydro-2H-pyran-4-carboxylic acid (CAS 99338-32-6) is a high-purity analytical reference standard with the molecular formula C6H8O3 and a molecular weight of 128.13 g/mol.
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.
As a certified reference material (CRM), 3,6-Dihydro-2H-pyran-4-carboxylic acid 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 | C6H8O3 |
| Molecular Weight | 128.13 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.) | 1985 |
Related Dihydro Standards
- 5,6-Dihydro-2H-pyran-3-carboxylic acid (CAS 100313-48-2)
- 3,6-dihydro-2H-pyran-2-carboxylic acid (CAS 116233-54-6)
- Methyl 4,5-dihydro-1H-pyrazole-5-carboxylate (CAS 164928-01-2)
- 1-Methyl-4,5-dihydro-1H-imidazole-4-carboxylic acid (CAS 17289-23-5)
- 1-(5,6-dihydro-1,4-dioxin-2-yl)ethan-1-one (CAS 59602-14-1)
- 2-Methyl-4,5-dihydro-1h-imidazole-4-carboxylic acid (CAS 902771-01-1)
- 3,4-Dihydro-2H-pyran-5-carboxylic Acid (CAS 40915-37-5)
- 5,6-Dihydro Thymine (CAS 696-04-8)
Recommended Standards
- 3,5-Dimethylimidazolidine-2,4-dione (CAS 6851-79-2)
- 3-amino-1-methylpyrrolidine-2,5-dione (CAS 67513-65-9)
- 3,4-Dimethyloxolane-2,5-dione (CAS 7475-92-5)
- 3-amino-4,4-dimethyl-4,5-dihydro-1,2-oxazol-5-one (CAS 2060021-64-7)
- Azepan-4-yl-[2-(4-fluoro-phenoxy)-ethyl]-methyl-amine (CAS 1316222-85-1)
- 3,6-Dimethylbenzo[d]isoxazol-4-ol (CAS 1380697-24-4)
- 8A-(2,4-dimethylphenyl)tetrahydro-2H-pyrrolo[2,1-b][1,3]oxazin-6(7H)-one (CAS 20381-04-8)
- 3-Pentyl-2-phenylquinoline (CAS 136800-94-7)
- 2-(((Tetrahydro-2H-pyran-2-yl)methyl)thio)-5-(2-(thiophen-2-yl)quinolin-4-yl)-1,3,4-oxadiazole (CAS 870757-54-3)
- 7-Chloro-4-nitrobenzo[c][1,2,5]oxadiazol-5-amine (CAS 227199-11-3)
- (E)-4-(4-(methoxycarbonyl)piperidin-1-yl)-4-oxobut-2-enoic acid (CAS 303994-59-4)
- Benzhexol Impurity 20 (CAS 29334-16-5)
- 4-(N,N-dimethylsulfamoyl)-2,5-dimethylfuran-3-carboxylic acid (CAS 716361-62-5)
- Acetyl-Tau Peptide (244-274) (Repeat 1 Domain) trifluoroacetate salt (CAS 2022956-56-3)
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