6-methyl-2H-chromene-3-carboxylic acid CAS 28339-81-3
| CAS No. | 28339-81-3 |
| Molecular Formula | C11H10O3 |
| Molecular Weight | 190.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 6-methyl-2H-chromene-3-carboxylic acid.
6-methyl-2H-chromene-3-carboxylic acid (CAS 28339-81-3), molecular formula C11H10O3 and molecular weight 190.20 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, 6-methyl-2H-chromene-3-carboxylic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 190.20 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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), 6-methyl-2H-chromene-3-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 | C11H10O3 |
| Molecular Weight | 190.20 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1965 |
Recommended Standards
- 6-Methoxy-7-methylquinazolin-4(1H)-one (CAS 666735-15-5)
- 6-Morpholinopyrazine-2-carbonitrile (CAS 40262-52-0)
- 6-Methoxy-7-methyl-4H-chromen-4-one (CAS 693780-50-6)
- 6-Morpholinopyridazine-3-carbonitrile (CAS 87977-26-2)
- 1-N-(2,2,2-trifluoroethyl)benzene-1,2-diamine (CAS 1152594-19-8)
- 2-(Pyrrolidin-2-yl)-4-(trifluoromethyl)pyrimidine (CAS 1259078-84-6)
- Benzyl 2-methyl-2-(oxiran-2-yl)propanoate (CAS 2813199-35-6)
- Benzaldehyde, 3-ethoxy-6-nitro-2-[(phenylsulfonyl)oxy]- (CAS 130570-43-3)
- 1-Chloro-5,6,7-trimethyl-6h-pyrrolo[3,4-d]pyridazine hydrochloride (CAS 96441-91-7)
- Benzonitrile, 4-(3-bromo-1H-pyrazol-1-yl)- (CAS 1622841-08-0)
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- 2-(5-Chloro-2-ethoxy-phenyl)-thiazolidine-4-carboxylic acid (CAS 1033301-31-3)
- Mast Cell Degranulating Peptide (CAS 83856-13-7)
Why CATO?
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