1,3-Dioxoisoindolin-2-yl 3,4,5-trimethoxybenzoate CAS 681845-28-3
| CAS No. | 681845-28-3 |
| Molecular Formula | C18H15NO7 |
| Molecular Weight | 357.31 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
1,3-Dioxoisoindolin-2-yl 3,4,5-trimethoxybenzoate (CAS 681845-28-3), molecular formula C18H15NO7 and molecular weight 357.31 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 1,3-Dioxoisoindolin-2-yl 3,4,5-trimethoxybenzoate (C18H15NO7) 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 357.31 g/mol, it falls into the moderately-high-molecular-weight range. 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).
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 | C18H15NO7 |
| Molecular Weight | 357.31 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.) | 1985 |
| Nitrogen Atoms | 1 |
Related Dioxoisoindolin Standards
- 2-(2-(1,3-Dioxoisoindolin-2-yl)ethoxy)-6-(1H-pyrrol-1-yl)benzonitrile (CAS 866043-00-7)
- (1,3-Dioxoisoindolin-2-yl)methyl 2-((4-methoxyphenyl)thio)acetate (CAS 869714-54-5)
- (E)-4-(1,3-Dioxoisoindolin-2-yl)-2-(1-methyl-1,3-dihydro-2H-benzo[d]imidazol-2-ylidene)-3-oxobutanenitrile (CAS 868613-98-3)
- N-(11-(1,3-Dioxoisoindolin-2-yl)undecyl)acetamide (CAS 90903-96-1)
- Ethyl 2-(1,3-dioxoisoindolin-2-yl)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate (CAS 81930-79-2)
- Ethyl 4-((1,3-dioxoisoindolin-2-yl)oxy)-2-(methylthio)pyrimidine-5-carboxylate (CAS 15400-45-0)
- (S)-2-((4-(1,3-Dioxoisoindolin-2-yl)phenyl)amino)succinic acid (CAS 834894-52-9)
- 1,3-Dioxoisoindolin-2-yl (1s,3s)-3-((tert-butoxycarbonyl)amino)cyclobutane-1-carboxylate (CAS 2248201-94-5)
Recommended Standards
- 1-(3,4-Difluorophenyl)-N-(2-methoxyphenyl)-4-oxo-1,4-dihydropyridazine-3-carboxamide (CAS 478063-32-0)
- 1-Benzyl-N-(3,4-difluorophenyl)-2,6-dioxo-1,2,3,6-tetrahydropyrimidine-4-carboxamide (CAS 338412-76-3)
- [2-Methoxy-4-(2-nitrovinyl)phenyl] β-D-glucopyranoside (CAS 70622-80-9)
- 2-3-4-6-Tetra-O-acetyl-β-D-galactopyranosyl cyanide (CAS 52443-07-9)
- 5-(Bromomethyl)-4-chlorothiazole (CAS 1256561-92-8)
- 1-(4-Chloroquinazolin-2-yl)-N,N-dimethylmethanamine (CAS 885460-14-0)
- 3-(2,4-Dimethylbenzoyl)thiophene (CAS 896618-59-0)
- N-(furan-2-ylmethyl)-2-(2-nitrophenoxy)ethan-1-amine hydrochloride (CAS 1609407-41-1)
- 7-Bromo-4-oxo-1,4-dihydrocinnoline-3-carboxylic acid (CAS 1194373-85-7)
- 8-Oxo-8-(o-tolyl)octanoic acid (CAS 898765-36-1)
- N-(4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethanesulfonamide (CAS 1256359-16-6)
- 2-(3-Bromobenzoyl)benzonitrile (CAS 746651-84-3)
- Ethylenediaminetetraacetic Acid Manganese Disodium Salt (CAS 15375-84-5)
- Semaglutide impurity 268 (CAS CATO-C4X-2226268)
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