4-Methyl-4,5,6,7-tetrahydro-4,7-epoxyisobenzofuran-1,3-dione CAS 90887-48-2
| CAS No. | 90887-48-2 |
| Molecular Formula | C9H8O4 |
| Molecular Weight | 180.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 4-Methyl-4,5,6,7-tetrahydro-4,7-epoxyisobenzofuran-1,3-dione (C9H8O4) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 180.16 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
4-Methyl-4,5,6,7-tetrahydro-4,7-epoxyisobenzofuran-1,3-dione (CAS 90887-48-2), molecular formula C9H8O4 and molecular weight 180.16 g/mol, is a CATO reference standard with documented purity and traceability.
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.
CATO manufactures 4-Methyl-4,5,6,7-tetrahydro-4,7-epoxyisobenzofuran-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 | C9H8O4 |
| Molecular Weight | 180.16 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1982 |
Related Methyl Standards
- 4-Oxo-4,5,6,7-tetrahydro-1-benzofuran-3-carboxylic acid (CAS 56671-28-4)
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Recommended Standards
- 4-Methyl-3a,4,7,7a-tetrahydro-4,7-epoxyisobenzofuran-1,3-dione (CAS 62653-25-2)
- 4-Methylisophthalic Acid (CAS 3347-99-7)
- 4-Methyl-2-nitrobenzamide (CAS 65078-05-9)
- 4-Oxo-4-(pyrimidin-2-yl)butanoic acid (CAS 81485-15-6)
- 1-(5-(Furan-2-yl)-1,3,4-thiadiazol-2-yl)-3-(3-methoxyphenyl)urea (CAS 426247-13-4)
- 2-(4-Chloro-3-methylbutyl)thiophene (CAS 1339483-48-5)
- 3-((Allyloxy)carbonyl)-5-cyclobutyl-3-azabicyclo[3.1.1]heptane-1-carboxylic acid (CAS 2803859-72-3)
- 4-Bromo-2-nitrobenzenethiol (CAS 76209-02-4)
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- n-(4-Methyl-1,3-thiazol-2-yl)piperidine-4-carboxamide (CAS 1016703-98-2)
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- Methyl 1-benzyl-1H-indole-2-carboxylate (CAS 81787-92-0)
- Neuroendocrine Regulatory Peptide-1 (human) (H-6622.1000) (CAS 954420-50-9)
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