4-[Acetyl(methyl)amino]benzoic acid CAS 26961-99-9
| CAS No. | 26961-99-9 |
| Molecular Formula | C10H11NO3 |
| Molecular Weight | 193.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 4-[Acetyl(methyl)amino]benzoic acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
4-[Acetyl(methyl)amino]benzoic acid (CAS 26961-99-9), molecular formula C10H11NO3 and molecular weight 193.20 g/mol, is a CATO reference standard with documented purity and traceability.
4-[Acetyl(methyl)amino]benzoic acid (C10H11NO3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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.
Physical & Chemical Properties
| Molecular Formula | C10H11NO3 |
| Molecular Weight | 193.20 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| 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.) | 1964 |
| Nitrogen Atoms | 1 |
Recommended Standards
- 4-[(1E)-(Methoxyimino)methyl]-2-methyl-6-oxo-1,4,5,6-tetrahydropyridine-3-carbonitrile (CAS 338415-16-0)
- 4-{[(diaminomethylidene)amino]methyl}benzoic acid (CAS 41651-87-0)
- 4,7-Dimethoxyindolin-2-one (CAS 208986-10-1)
- 4-Acetamido-3-methylbenzoic acid (CAS 37901-92-1)
- 1-(5-Methylthiophen-2-yl)-N-(pyridin-2-ylmethyl)methanamine hydrochloride (CAS 1050213-87-0)
- 3-Bromo-4,5,6,7-tetrahydro-1H-indazole (CAS 1246553-15-0)
- 3-[(2-Methylbenzyl)oxy]azetidine (CAS 1121612-93-8)
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- sodium 2-[3-(2-methylpropyl)pyridin-4-yl]acetate (CAS 1989659-40-6)
- methyl 3-hydroxy-1H-indole-2-carboxylate (CAS 31827-04-0)
- 3,4-Diphenyl-1-(p-tolyl)-1H-pyrrole-2-carbonitrile (CAS 102755-56-6)
- Rabeprazole Impurity 43 (CAS 209914-31-8（free base）)
- Mupirocin Dimer 4 (CAS CATO-C4X-170638)
- Semaglutide impurity 198 (CAS CATO-C4X-2226198)
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