5-[(1,3-Dihydro-1,3-dioxo-2H-isoindol-2-yl)methyl]-2-hydroxy-3-methylbenzoic acid CAS 781626-90-2
| CAS No. | 781626-90-2 |
| Molecular Formula | C17H13NO5 |
| Molecular Weight | 311.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 5-[(1,3-Dihydro-1,3-dioxo-2H-isoindol-2-yl)methyl]-2-hydroxy-3-methylbenzoic acid (C17H13NO5) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 311.29 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
5-[(1,3-Dihydro-1,3-dioxo-2H-isoindol-2-yl)methyl]-2-hydroxy-3-methylbenzoic acid (CAS 781626-90-2), molecular formula C17H13NO5 and molecular weight 311.29 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C17H13NO5 |
| Molecular Weight | 311.29 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Nitrogen Atoms | 1 |
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Recommended Standards
- 5-(Benzo[d][1,3]dioxol-5-yl)-3-((phenylamino)methyl)-1,3,4-oxadiazol-2(3H)-one (CAS 73484-47-6)
- 5-[(1,3-dioxo-2,3-dihydro-1h-isoindol-2-yl)methyl]-2-methoxybenzoic acid (CAS 556016-14-9)
- 5-(6-Amino-9H-purin-9-yl)-6-ethoxy-3-(hydroxymethyl)-1,4-dioxan-2-ol (CAS 62441-11-6)
- 5-Amino-2-nitrobenzenesulfonic acid (CAS 551-91-7)
- 8-Bromoguanosine (CAS 4016-63-1)
- 3895-25-8 4-Fluorobenzenesulfonyl isocyanate DTXSID10369872 (CAS 3895-25-8)
- 4-(2-methyl-1,3-dioxolan-2-yl)-1,2-dihydropyridin-2-one (CAS 192819-08-2)
- 2,2-Dimethyl-5,5-diphenyloxazolidin-4-one (CAS 101877-67-2)
- 1-Amino-3-(azepan-1-yl)propan-2-ol (CAS 953743-40-3)
- 1,1-Dichloro-1,2,3,3,3-pentafluoropropane DISCONTINUED (CAS 111512-56-2)
- 3-Amino-1-isopropoxy-1H-pyrazol-4-ol (CAS 927417-52-5)
- 2-Cyano-3-[5-[4-(diphenylamino)phenyl]thieno[3,2-b]thien-2-yl]-2-propenoic acid (CAS 1092363-69-3)
- 3-tert-Butyl-5-methylcarboxylate benzamide3-carbamoyl-5-tert-butyl-methyl Benzoate (CAS 885518-18-3)
- Peptide 436 (CAS CATO-CPTD788436)
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