3-Hydroxy-3-methylisobenzofuran-1(3H)-one CAS 1828-76-8
| CAS No. | 1828-76-8 |
| Molecular Formula | C9H8O3 |
| Molecular Weight | 164.16 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.
3-Hydroxy-3-methylisobenzofuran-1(3H)-one (CAS 1828-76-8), molecular formula C9H8O3 and molecular weight 164.16 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, 3-Hydroxy-3-methylisobenzofuran-1(3H)-one is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 164.16 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).
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 | C9H8O3 |
| Molecular Weight | 164.16 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.) | 1957 |
Related Hydroxy Standards
- 3-Hydroxy-2-(3-hydroxyphenyl)prop-2-enal (CAS 105899-68-1)
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- 5-Hydroxy-4-methyl-1H-pyrrolo[2,3-b]pyridin-2(3H)-one (CAS 1190316-54-1)
- 5-Hydroxy-4-methylisobenzofuran-1(3H)-one (CAS 1194700-73-6)
- 2-Hydroxy-7,8-dihydro-1,6-naphthyridin-5(6H)-one (CAS 1251033-14-3)
- 3-Hydroxy-6-methyl-5H,6H,7H-pyrrolo[3,4-b]pyridin-5-one (CAS 1391732-76-5)
- 1-Hydroxy-2-methyl-1H-1,3-benzodiazol-3-ium-3-olate (CAS 15966-52-6)
- 3-Hydroxy-6-methylisobenzofuran-1(3H)-one (CAS 177166-16-4)
Recommended Standards
- Methyl-beta-L-arabinopyranoside (CAS 1825-00-9)
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- 8-Hydroxychroman-4-one (CAS 1843-90-9)
- tert-Butyl 3-oxo-2,3-dihydro-1H-indazole-1-carboxylate (CAS 120276-69-9)
- β-D-Glucopyranoside, 4-methoxyphenyl 4-O-(2,3,4,6-tetra-O-acetyl-α-D-glucopyranosyl)-, triacetate (CAS 848863-34-3)
- Irsogladine Impurity 1 (CAS 104766-03-2)
- 4-(4-Chloro-2-fluorobenzoyl)-8-propyl-1-oxa-4,8-diazaspiro[4.5]decane-3-carboxylic acid (CAS 1326808-79-0)
- 1-((1-Methyl-1H-pyrazol-5-yl)methyl)-1,4-diazepane (CAS 1247800-54-9)
- Ethyl 3-bromo-1-methyl-1H-pyrrole-2-carboxylate (CAS 1823872-61-2)
- N-[1-(2-Methylphenyl)ethyl]cyclopropanamine (CAS 926247-89-4)
- N-methyl-2-(3-phenyl-6-(trifluoromethyl)thieno[3,2-b]pyridine-2-carbonyl)hydrazine-1-carbothioamide (CAS 478048-38-3)
- N-(3,4-dimethylphenyl)-3-(2-nitro-4-(trifluoromethyl)phenoxy)thiophene-2-carboxamide (CAS 252026-61-2)
- (Leu31,Pro34)-Peptide YY (human) trifluoroacetate salt (CAS 179986-95-9)
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