6118-51-0 4,7-Epoxyisobenzofuran-1,3-dione, 3a,4,7,7a-tetrahydro-, (3a-alpha,4-beta,7-beta,7a-alpha)- AI3-32678 3a-alpha,4-beta,7-beta,7a-alpha-Tetrahydro-4,7-epoxyisobenzofuran-1,3-dione AI 3-32678 CAS 6118-51-0
| CAS No. | 6118-51-0 |
| Molecular Formula | C8H6O4 |
| Molecular Weight | 166.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 6118-51-0 4,7-Epoxyisobenzofuran-1,3-dione, 3a,4,7,7a-tetrahydro-, (3a-alpha,4-beta,7-beta,7a-alpha)- AI3-32678 3a-alpha,4-beta,7-beta,7a-alpha-Tetrahydro-4,7-epoxyisobenzofuran-1,3-dione AI 3-32678 is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
6118-51-0 4,7-Epoxyisobenzofuran-1,3-dione, 3a,4,7,7a-tetrahydro-, (3a-alpha,4-beta,7-beta,7a-alpha)- AI3-32678 3a-alpha,4-beta,7-beta,7a-alpha-Tetrahydro-4,7-epoxyisobenzofuran-1,3-dione AI 3-32678 (CAS 6118-51-0), molecular formula C8H6O4 and molecular weight 166.13 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, 6118-51-0 4,7-Epoxyisobenzofuran-1,3-dione, 3a,4,7,7a-tetrahydro-, (3a-alpha,4-beta,7-beta,7a-alpha)- AI3-32678 3a-alpha,4-beta,7-beta,7a-alpha-Tetrahydro-4,7-epoxyisobenzofuran-1,3-dione AI 3-32678 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 166.13 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C8H6O4 |
| Molecular Weight | 166.13 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.) | 1958 |
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