5-Methoxyisatin CAS 39755-95-8
| CAS No. | 39755-95-8 |
| Molecular Formula | C9H7NO3 |
| Molecular Weight | 177.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 5-Methoxyisatin.
5-Methoxyisatin (CAS 39755-95-8) is a high-purity analytical reference standard with the molecular formula C9H7NO3 and a molecular weight of 177.16 g/mol.
Structurally, 5-Methoxyisatin (C9H7NO3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 177.16 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | 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.) | 1968 |
| Nitrogen Atoms | 1 |
Related Methoxyisatin Standards
Recommended Standards
- 5-Hydroxyindole-3-carboxylic Acid (CAS 3705-21-3)
- 5-Methoxyisoindoline-1,3-dione (CAS 50727-04-3)
- 5-Hydroxy-4-phenyl-2,3-dihydro-1,2-oxazol-3-one (CAS 36190-14-4)
- 5-Methoxypyrido[3,4-d]pyrimidin-4(1H)-one (CAS 709666-25-1)
- 5-Bromo-1-(chloromethyl)naphthalene (CAS 20366-58-9)
- 5-Fluorouracil N-β-D-Glucuronide Methyl Ester, 2,3,4-Triacetate (CAS 77476-81-4)
- methyl 2-oxabicyclo[2.1.1]hexane-4-carboxylate (CAS 2113569-16-5)
- Methyl 6-bromo-2-chloro-3-methoxybenzoate (CAS 750586-08-4)
- 2-Oxo-6-(trifluoromethyl)-1-{[3-(trifluoromethyl)phenyl]methyl}-1,2-dihydropyridine-3-carboxamide (CAS 338977-68-7)
- 4-Benzyl-5-(piperidin-1-ylmethyl)-4h-1,2,4-triazole-3-thiol (CAS 790263-73-9)
- 1-(pyridin-2-ylmethyl)-1H-pyrrole-2-carboxylic acid (CAS 896049-13-1)
- (R)-2-Amino-3-mercapto-2-methylpropanoic acid (CAS 22681-73-8)
- 2-((3-Cyano-6-methyl-4-(thiophen-2-yl)-5,6,7,8-tetrahydro-1,6-naphthyridin-2-yl)thio)-N-(3,4-dimethoxyphenyl)acetamide (CAS 496018-61-2)
- Hexapeptide-1 (CAS CATO-CPTD788821)
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