2-((5,6-Dimethoxy-2-phenyl-1H-indol-3-yl)thio)acetic acid CAS 63251-96-7
| CAS No. | 63251-96-7 |
| Molecular Formula | C18H17NO4S |
| Molecular Weight | 343.40 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
2-((5,6-Dimethoxy-2-phenyl-1H-indol-3-yl)thio)acetic acid (CAS 63251-96-7), molecular formula C18H17NO4S and molecular weight 343.40 g/mol, is a CATO reference standard with documented purity and traceability.
2-((5,6-Dimethoxy-2-phenyl-1H-indol-3-yl)thio)acetic acid (C18H17NO4S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. 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).
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 | C18H17NO4S |
| Molecular Weight | 343.40 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1975 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
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Recommended Standards
- 2-((4-(1H-Pyrrol-1-yl)-4H-1,2,4-triazol-3-yl)thio)-N-(2-methoxy-5-methylphenyl)acetamide (CAS 903360-53-2)
- 2-((5,7-Dimethyl-[1,2,4]triazolo[1,5-a]pyrimidin-2-yl)thio)-N-(4-methoxyphenyl)acetamide (CAS 262858-64-0)
- 1-Diphenylphosphino-2-(N,N-dimethylamino)-1H-indene (CAS 628323-64-8)
- 2-((tert-Butoxycarbonyl)amino)-2-(4-(ethylsulfonyl)phenyl)acetic acid (CAS 2231667-19-7)
- 2-Amino-5,5,5-trifluoro-4-(trifluoromethyl)pentanoic acid (CAS 16063-98-2)
- (1Z)-1-{3-chloro-4-[(4-fluorophenyl)methoxy]phenyl}-N-(2,4-difluorophenyl)methanimine (CAS 297150-45-9)
- 4-Hydrazinyl-1H-pyrazolo[3,4-d]pyrimidin-6-amine (CAS 487008-86-6)
- 5,6,7,8-Tetrahydroquinoline (CAS 10500-57-9)
- 3-Fluoro-4-(((tetrahydrofuran-2-yl)methoxy)methyl)benzaldehyde (CAS 1443303-51-2)
- 2-(4-Aminophenyl)-N-(1-hydroxy-2-methylpropan-2-yl)acetamide (CAS 1155074-38-6)
- 1-(2,4-difluorophenyl)-5-methyl-1H-pyrazol-3-amine (CAS 1171907-02-0)
- N-[4-(Hex-1-yn-1-yl)phenyl]-1-phenylmethanesulfonamide (CAS 439097-41-3)
- (S)-2-((S)-3-(1H-Imidazol-4-yl)-2-(12-mercaptododecanamido)propanamido)-3-phenylpropanoic acid (CAS 828295-65-4)
- Semaglutide impound 212 (CAS CATO-C4X-2226212)
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