4-Methyl-3a,4,7,7a-tetrahydroisobenzofuran-1,3-dione CAS 5333-84-6
| CAS No. | 5333-84-6 |
| Molecular Formula | C9H10O3 |
| Molecular Weight | 166.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 4-Methyl-3a,4,7,7a-tetrahydroisobenzofuran-1,3-dione (C9H10O3) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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-Methyl-3a,4,7,7a-tetrahydroisobenzofuran-1,3-dione (CAS 5333-84-6) is a high-purity analytical reference standard with the molecular formula C9H10O3 and a molecular weight of 166.17 g/mol.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 4-Methyl-3a,4,7,7a-tetrahydroisobenzofuran-1,3-dione 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 | C9H10O3 |
| Molecular Weight | 166.17 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
Recommended Standards
- 4-Methyl-3a,4,5,7a-tetrahydroisobenzofuran-1,3-dione (CAS 23939-62-0)
- 5-(Hydroxymethyl)-2-methylbenzoic acid (CAS 2211-78-1)
- 4-Methyl-2-methoxybenzoic acid (CAS 704-45-0)
- 5-(Hydroxymethyl)-2-methylbenzoic acid (CAS 72985-21-8)
- 1743AH 34290-57-8 C41H79O13P.NH3 DPPI (NH4+ salt) (CAS 34290-57-8)
- 2-Chloro-5-(dimethoxymethyl)aniline (CAS 2244087-36-1)
- 5-(Aminomethyl)-1-methyl-1H-pyrrole-2-carboximidamide (CAS 758683-10-2)
- N-Benzyl-N-isopropylpiperidin-4-amine (CAS 1353956-24-7)
- (S)-3-(5-Oxo-1-phenyl-2-thioxoimidazolidin-4-yl)propanamide (CAS 29588-05-4)
- 2,2-Difluoro-2-(1-hydroxy-4-methylcyclohexyl)acetic acid (CAS 1248938-79-5)
- 294653-45-5 2-Mercapto-5-phenyl-3H-thieno[2,3-d]pyrimidin-4-one MFCD03656342 (CAS 294653-45-5)
- 1-(5-Hydroxy-1-(4-methoxybenzyl)-1H-pyrazol-4-yl)ethanone (CAS 821016-28-8)
- 1-Phenyl-1,4-dihydrothiochromeno[4,3-c]pyrazole-3-carboxylic acid (CAS 69099-25-8)
- Semaglutide impurity 23 (CAS CATO-C4X-222623)
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