1H-Indole-2,3-diol CAS 5638-85-7
| CAS No. | 5638-85-7 |
| Molecular Formula | C8H7NO2 |
| Molecular Weight | 149.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C8H7NO2, 1H-Indole-2,3-diol 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 149.15 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).
CATO supplies 1H-Indole-2,3-diol (CAS 5638-85-7), a certified reference material (molecular formula C8H7NO2, MW 149.15 g/mol) for analytical method development and quality control.
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), 1H-Indole-2,3-diol 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 | C8H7NO2 |
| Molecular Weight | 149.15 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 1 |
Related H Standards
- 1H-indole-5,7-diol (CAS 191331-69-8)
- 1H-Indole-1,4-diol (CAS 877470-36-5)
- 1H-Indole-2,5-diol (CAS 321884-36-0)
- 1H-Indole-4,5-diol (CAS 412029-30-2)
- 1H-Indole-4,7-diol (CAS 35305-29-4)
- 1H-Indole-6,7-diol (CAS 412029-31-3)
- 496-30-0 2H-Indole-2-thione, 1,3-dihydro- (9CI) 2-Indolinethione 5-21-08-00018 (Beilstein Handbook Reference) Benzazoline-2-thione BRN 0002992 1,3-Dihydro-2H-indole-2-thione (CAS 496-30-0)
- Indole-5-carbonitrile (CAS 15861-24-2)
Recommended Standards
- 1H,2H,3H,4H-pyrido[3,4-b]pyrazin-3-one (CAS 67074-80-0)
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- 1-Cyanato-4-methoxybenzene (CAS 2983-74-6)
- 1-azido-2-methoxybenzene (CAS 20442-97-1)
- (S)-2-Amino-1-((S)-3-(benzyl(cyclopropyl)amino)piperidin-1-yl)-3-methylbutan-1-one (CAS 1401666-33-8)
- Cyclohexyltriethoxysilane (CAS 18151-84-3)
- (2-Amino-6-(difluoromethyl)-4-fluoropyridin-3-yl)methanol (CAS 1806809-67-5)
- 1-(5-Bromopentyl)-1,2,4-triazole (CAS 1343291-11-1)
- 2-Amino-5-(4’-methylbiphenyl-4-yl)-1,3,4-thiadiazole (CAS 1255574-36-7)
- (E)-3-(3,4-Dimethoxyphenyl)-N-(4,6-dimethylpyrimidin-2-yl)acrylamide (CAS 1164491-53-5)
- Ethyl 3-bromo-8-(trifluoromethyl)imidazo[1,2-a]pyridine-2-carboxylate (CAS 1355171-40-2)
- (Z)-3-methyl-4-(methylamino)but-3-en-2-one (CAS 89029-85-6)
- Ala-Arg-Pro-Ala-D-Lys-Amide (CAS 84236-98-6)
- Allo-D-Ile27-Tirzepatide (CAS CATO-CPTD788961)
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