2',3',4',9'-Tetrahydrospiro[indoline-3,1'-pyrido[3,4-b]indol]-2-one CAS 796887-09-7
| CAS No. | 796887-09-7 |
| Molecular Formula | C18H15N3O |
| Molecular Weight | 289.33 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
2',3',4',9'-Tetrahydrospiro[indoline-3,1'-pyrido[3,4-b]indol]-2-one (CAS 796887-09-7), molecular formula C18H15N3O and molecular weight 289.33 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 2',3',4',9'-Tetrahydrospiro[indoline-3,1'-pyrido[3,4-b]indol]-2-one (C18H15N3O) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
Physical & Chemical Properties
| Molecular Formula | C18H15N3O |
| Molecular Weight | 289.33 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Nitrogen Atoms | 3 |
Related Tetrahydrospiro Standards
- 2',3',4',9'-Tetrahydrospiro[cyclohexane-1,1'-pyrido[3,4-b]indole]-3'-carboxylic acid (CAS 100068-46-0)
- 1'-Benzyl-3,5,6,7-tetrahydrospiro[imidazo[4,5-c]pyridine-4,4'-piperidine] (CAS 65092-20-8)
- 2'-Oxo-1',2',5,7-tetrahydrospiro[cyclopenta[b]pyridine-6,3'-pyrrolo[2,3-b]pyridine]-3-carboxylic acid (CAS 1486481-91-7)
- Methyl 2',3',4',9'-tetrahydrospiro[cyclohexane-1,1'-pyrido[3,4-b]indole]-3'-carboxylate (CAS 113247-25-9)
- 1-Oxo-2',3',5',6'-tetrahydrospiro[isochroman-3,4'-thiopyran]-4-carboxylic acid (CAS 1263206-82-1)
- 2-(2-Oxo-2',3',5',6'-tetrahydrospiro[indoline-3,4'-pyran]-1-yl)acetic acid (CAS 880079-26-5)
- (S)-2',3',4',9'-Tetrahydrospiro[oxetane-3,1'-pyrido[3,4-b]indole]-3'-carboxylic acid (CAS 1956436-34-2)
- (S)-2',3',4',9'-Tetrahydrospiro[cyclobutane-1,1'-pyrido[3,4-b]indole]-3'-carboxylic acid (CAS 1956436-79-5)
Recommended Standards
- 2-(Naphthalen-1-yl)-3a,4,7,7a-tetrahydro-1H-4,7-methanoisoindole-1,3(2H)-dione (CAS 26491-08-7)
- 2,5-Dibromo-4-chloro-3-fluoropyridine (CAS 2569479-78-1)
- 2-(4-Methoxyphenyl)-2H-benzo[g]indazol-3-amine (CAS 89020-75-7)
- 2,5-Dimethyl-1-(4-{[1,2,4]triazolo[1,5-a]pyrimidin-7-yl}phenyl)-1H-pyrrole (CAS 865658-62-4)
- 2,4-dinitrophenylsulfonyl chloride (CAS 1656-44-6)
- 7-Amino-alpha-tetralone 7-amino-1-tetralone 7-amino-3,4-dihydro-2h-naphthalen-1-one 7-amino-3,4-dihydronaphthalen-2(1h)-one 7-amino-a-tetralone 7-amino-3,4-dihydro-1(2h)-naphthalenone 7-amino-2,3,4-trihydronaphthalen-1-one 7-amino-3,4-dihydronaphthalen-1(2h)-one 22009-40-1 (CAS 22009-40-1)
- cis-4-[2-(4-Methoxyphenyl)-2-oxoethyl]-cyclohexane-1-carboxylic acid (CAS 735275-52-2)
- 7-Bromo-3,4-dihydrobenzo[b]thiepin-5(2H)-one (CAS 15084-55-6)
- 2-Chlorothieno[3,2-d]pyrimidine-7-carbaldehyde (CAS 1356016-35-7)
- Methyl 2-(3,5-dimethylphenyl)-2-oxoacetate (CAS 1314913-93-3)
- bicyclo[3.1.1]heptan-1-ol (CAS 130775-52-9)
- Buspirone Impurity 24 (CAS 1800242-04-9)
- Fmoc-β-(1-piperazinyl)-Ala(Boc)-OH (CAS 313052-20-9)
- Semaglutide impurity 85 (CAS CATO-C4X-222685)
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