7-Ethyl-1-oxoisochromane-3-carboxylic acid CAS 951896-10-9
| CAS No. | 951896-10-9 |
| Molecular Formula | C12H12O4 |
| Molecular Weight | 220.22 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.
7-Ethyl-1-oxoisochromane-3-carboxylic acid (CAS 951896-10-9), molecular formula C12H12O4 and molecular weight 220.22 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C12H12O4, 7-Ethyl-1-oxoisochromane-3-carboxylic acid 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 220.22 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
As a certified reference material (CRM), 7-Ethyl-1-oxoisochromane-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 | C12H12O4 |
| Molecular Weight | 220.22 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 chloroform, dichloromethane, ethyl acetate, 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.) | 1987 |
Related Ethyl Standards
- Ethyl 1-oxoisochromane-3-carboxylate (CAS 16266-88-9)
- Methyl 4-oxoisochromane-6-carboxylate (CAS 1336947-02-4)
- Methyl 4-oxoisochromane-5-carboxylate (CAS 1337841-67-4)
- Methyl 1-oxoisochromane-3-carboxylate (CAS 17225-04-6)
- 1-oxoisochromane-5-carboxylic acid (CAS 90921-13-4)
- 1-Oxoisochromane-7-carboxylic acid (CAS 52465-55-1)
- 3-Oxoisochromane-6-carboxylic acid (CAS 933703-12-9)
- Butyl 1-oxoisochromane-3-carboxylate (CAS 499209-44-8)
Recommended Standards
- 7-Ethoxy-N-hydroxybenzofuran-2-carboximidamide (CAS 199287-14-4)
- 7-Hydroxy-L-Tryptophan (CAS 25198-02-1)
- 7-Ethoxybenzofuran-2-carbohydrazide (CAS 406192-78-7)
- 7-Methoxy-4-oxo-1,2,3,4-tetrahydronaphthalene-2-carboxylic acid (CAS 20940-76-5)
- Pioglitazone Bromo Impurity (CAS 669716-58-9)
- 6-Chloro-[3,4'-bipyridin]-5-amine (CAS 117514-86-0)
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- Spiro[cyclopropane-1,3'-pyrrolo[3,2-c]pyridin]-2'(1'H)-one (CAS 1637752-30-7)
- Dimethyl 5-(3-fluorophenyl)-1H,3H-pyrrolo[1,2-c]thiazole-6,7-dicarboxylate 2-oxide (CAS 337920-91-9)
- 4-(2-Aminoethoxy)-N,N-dimethylaniline (CAS 1082507-72-9)
- 1H-Pyrrolo[2,3-c]pyridine-2-carboxylic acid hydrochloride (CAS 2007919-20-0)
- 1-(2,6-Dichloro-4-(trifluoromethyl)phenyl)-5-(3,4-dichlorophenyl)-4-(methylsulfonyl)-1H-pyrazole (CAS 400088-06-4)
- (1R)-IDH889 (CAS 1429179-08-7)
- Tirzepatide Impurity 19 X TFA Salt (CAS CATO-C4X-324019)
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