7-Hydroxy-1h-indole-2-carboxylicacid CAS 84639-84-9
| CAS No. | 84639-84-9 |
| Molecular Formula | C9H7NO3 |
| Molecular Weight | 177.16 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.
7-Hydroxy-1h-indole-2-carboxylicacid (CAS 84639-84-9), molecular formula C9H7NO3 and molecular weight 177.16 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C9H7NO3, 7-Hydroxy-1h-indole-2-carboxylicacid contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 177.16 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
As a certified reference material (CRM), 7-Hydroxy-1h-indole-2-carboxylicacid 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 | C9H7NO3 |
| Molecular Weight | 177.16 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1981 |
| Nitrogen Atoms | 1 |
Related Hydroxy Standards
- 5-Hydroxy-7-methylindoline-2,3-dione (CAS 1041857-41-3)
- 6-Hydroxy-1H-indol-5-yl formate (CAS 113370-06-2)
- N-Hydroxy-7H-pyrrolo[2,3-d]pyrimidine-5-carboximidamide (CAS 1189580-06-0)
- 6-hydroxy-1H-indole-5-carboxylic acid (CAS 1246668-93-8)
- 5-Hydroxy-1H-indole-1-carboxylic acid (CAS 125502-72-9)
- 6-Hydroxy-2-methyl-4H-benzo[d][1,3]oxazin-4-one (CAS 125558-96-5)
- 3-Hydroxy-6-methylbenzo[d][1,2,3]triazin-4(3H)-one (CAS 132533-58-5)
- 7-Hydroxy-1H-indole-5-carboxylic acid (CAS 1369158-48-4)
Recommended Standards
- 7-Aminoquinoxaline-2,5-diol (CAS 860367-75-5)
- 7-Hydroxy-1-methylindoline-2,3-dione (CAS 79223-92-0)
- 7-Amino-1H-benzo[d]imidazole-5-carboxylic acid (CAS 712263-15-5)
- 7-Methoxybenzo[d][1,2,3]triazin-4(1H)-one (CAS 41994-97-2)
- Methyl 3-(1H-pyrrolo[2,3-b]pyridin-2-yl)propanoate (CAS 1956326-46-7)
- Methyl 5-(2-methoxy-2-oxoethyl)furan-2-carboxylate (CAS 1087784-37-9)
- (2-(Ethoxydimethylsilyl)ethyl)diphenylphosphine (CAS 359859-29-3)
- 2-Ethyl-6-methyl-1H-pyrazolo[1,5-b][1,2,4]triazole (CAS 151406-47-2)
- 2-(5-Fluoropyridin-2-yl)-2-methylpropan-1-amine (CAS 1402392-58-8)
- Coenzyme Q10-d6 (CAS 1331655-96-9)
- 2-Hydroxy-6-isobutylpyrimidine-4-carboxylic acid (CAS 876715-59-2)
- 4-Amino-6-chloro-5-(difluoromethyl)pyridine-2-sulfonyl chloride (CAS 1803669-18-2)
- (1-isocyanatocyclopropyl)benzene (CAS 862487-15-8)
- Peptide 439 (CAS CATO-CPTD788439)
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