3,4-Dihydro-2H-pyran-5-carboxylic Acid CAS 40915-37-5
| CAS No. | 40915-37-5 |
| Molecular Formula | C6H8O3 |
| Molecular Weight | 128.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
3,4-Dihydro-2H-pyran-5-carboxylic Acid (CAS 40915-37-5) is a high-purity analytical reference standard with the molecular formula C6H8O3 and a molecular weight of 128.13 g/mol.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, 3,4-Dihydro-2H-pyran-5-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).
CATO manufactures 3,4-Dihydro-2H-pyran-5-carboxylic Acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
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.) | 1968 |
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)
- 3,6-Dihydro-2H-pyran-4-carboxylic acid (CAS 99338-32-6)
- 5,6-Dihydro Thymine (CAS 696-04-8)
Recommended Standards
- 3,3-Dimethylfuran-2,4(3H,5H)-dione (CAS 5436-15-7)
- 3,4-Dimethyloxolane-2,5-dione (CAS 7475-92-5)
- 3-(Propan-2-yl)-1,2,4-oxadiazol-5-ol (CAS 52366-04-8)
- 3,5-Dimethylimidazolidine-2,4-dione (CAS 6851-79-2)
- 2-(2-Methoxy-5-methylphenyl)-1H-indole (CAS 58697-64-6)
- 2,4-Dibromo-6-({[4-(trifluoromethyl)phenyl]amino}methyl)phenol (CAS 477871-77-5)
- 5-azaspiro[2.4]heptan-4-one (CAS 3697-70-9)
- Methyl 2-(2-((2,5-dichlorophenoxy)methyl)morpholino)acetate (CAS 1706441-45-3)
- 1-(4-(1,1,2,2-Tetrafluoroethoxy)phenyl)ethan-1-one (CAS 101975-15-9)
- Tert-butyl n-{[methyl(pyridin-2-ylmethyl)carbamoyl]methyl}carbamate (CAS 1258649-76-1)
- 4-Oxochroman-8-carboxylic acid (CAS 90921-10-1)
- 2,4-Dithiouridine (CAS 13239-96-8)
- Benzyl 3-(hydroxymethyl)-4-methylpyrrolidine-1-carboxylate (CAS 959236-80-7)
- Des-Val23-Tirzepatide (CAS CATO-CPTD788950)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com