3-Hydroxyanthranilic Acid CAS 548-93-6
| CAS No. | 548-93-6 |
| Molecular Formula | C7H7NO3 |
| Molecular Weight | 153.14 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 153.14 g/mol gives 3-Hydroxyanthranilic Acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
3-Hydroxyanthranilic Acid (CAS 548-93-6), molecular formula C7H7NO3 and molecular weight 153.14 g/mol, is a CATO reference standard with documented purity and traceability.
3-Hydroxyanthranilic Acid (C7H7NO3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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.
As a certified reference material (CRM), 3-Hydroxyanthranilic 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.
Physical & Chemical Properties
| Molecular Formula | C7H7NO3 |
| Molecular Weight | 153.14 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
Related Hydroxyanthranilic Standards
Recommended Standards
- 2-Nitrobenzyl Alcohol (CAS 612-25-9)
- 3-Nitro-p-cresol (CAS 2042-14-0)
- 4-Nitro-1,2-phenylenediamine (CAS 99-56-9)
- 4-Nitroanisole (CAS 100-17-4)
- 2-(1-Piperidino)aniline (CAS 39643-31-7)
- Racemic-(4aS,7R,7aR)-4-benzyl-7-(tert-butyldiphenylsilyloxy)hexahydrocyclopenta[b][1,4]oxazin-3(2H)-one (CAS 1422344-15-7)
- 1-Phenyl-1,2,3,4-tetrahydro-quinolin-4-ylamine (CAS 10257-98-4)
- N-(3-Amino-4-chlorophenyl)-2-(2-isopropyl-5-methylphenoxy)acetamide (CAS 1020054-45-8)
- L-glycine-2,2,4,6,7-pentamethyldihydrobenzofuran-5-sulfonyl-L-arginine (CAS CATO-CPTD788875)
- 3-(S-Methylsulfonimidoyl)benzonitrile (CAS 2361964-39-6)
- 2-Chloro-6-fluorobenzotrichloride (CAS 84473-83-6)
- 2-(5-chloro-1,3-benzoxazol-2-yl)propan-2-amine hydrochloride (CAS 2060006-66-6)
- (4S,5S)-3-Mesityl-1-(2-methoxyphenyl)-4,5-diphenyl-4,5-dihydro-1H-imidazol-3-ium tetrafluoroborate (CAS 1629773-17-6)
- Semaglutide impurity 96 (CAS CATO-C4X-222696)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com