2-((11AS)-5-(3-methoxyphenyl)-1,3-dioxo-5,6,11,11a-tetrahydro-1H-imidazo[1',5':1,6]pyrido[3,4-b]indol-2(3H)-yl)benzoic acid CAS 957043-83-3
| CAS No. | 957043-83-3 |
| Molecular Formula | C27H21N3O5 |
| Molecular Weight | 467.47 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 2-((11AS)-5-(3-methoxyphenyl)-1,3-dioxo-5,6,11,11a-tetrahydro-1H-imidazo[1',5':1,6]pyrido[3,4-b]indol-2(3H)-yl)benzoic acid is closely related to a steroid core, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
2-((11AS)-5-(3-methoxyphenyl)-1,3-dioxo-5,6,11,11a-tetrahydro-1H-imidazo[1',5':1,6]pyrido[3,4-b]indol-2(3H)-yl)benzoic acid (CAS 957043-83-3), molecular formula C27H21N3O5 and molecular weight 467.47 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 2-((11AS)-5-(3-methoxyphenyl)-1,3-dioxo-5,6,11,11a-tetrahydro-1H-imidazo[1',5':1,6]pyrido[3,4-b]indol-2(3H)-yl)benzoic acid (C27H21N3O5) 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 the protonation state of its nitrogen-containing groups, 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.
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 | C27H21N3O5 |
| Molecular Weight | 467.47 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 19.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 3 |
Related AS Standards
- 2-((11AS)-5-(4-methoxyphenyl)-1,3-dioxo-5,6,11,11a-tetrahydro-1H-imidazo[1',5':1,6]pyrido[3,4-b]indol-2(3H)-yl)benzoic acid (CAS 956919-29-2)
- 4-((11AS)-5-(3-methoxyphenyl)-1,3-dioxo-5,6,11,11a-tetrahydro-1H-imidazo[1',5':1,6]pyrido[3,4-b]indol-2(3H)-yl)benzoic acid (CAS 956947-77-6)
- 1-[7-(4-Methoxyphenyl)-2-[1-methyl-5-(trifluoromethyl)-1H-pyrazol-4-yl]pyrazolo[1,5-a]pyrimidin-6-yl]-3,5-dimethyl-1H-pyrazole (CAS 956206-55-6)
- 4-{[3-(3-methoxyphenyl)-1,2,4-oxadiazol-5-yl]methyl}-1-(3,4,5-trimethoxybenzoyl)piperidine (CAS 1775513-10-4)
- 4-(1-(2-(2-((4-Ethyl-5-(4-methoxyphenyl)-4H-1,2,4-triazol-3-yl)thio)acetyl)hydrazono)ethyl)phenyl acetate (CAS 303103-06-2)
- 7-[4-[Bis(4-methoxyphenyl)amino]phenyl]-2,1,3-benzothiadiazole-4-carboxaldehyde (CAS 2131058-21-2)
- 1-(4-Methoxyphenyl)-4-((3-methoxyphenyl)thio)-2-phenyl-6,7-dihydro-1H-indole-5-carbaldehyde (CAS 477869-31-1)
- 4-Methoxyphenyl 2-6-di-O-benzyl-β-D-galactopyranoside (CAS 159922-50-6)
Recommended Standards
- (S)-4-(((Benzyloxy)carbonyl)amino)-5-(((S)-1-carboxy-2-(1H-indol-3-yl)ethyl)amino)-5-oxopentanoic acid (CAS 73170-51-1)
- 2'-Amino-5'-(4-carboxyphenyl)-4'-methyl-[1,1':3',1''-terphenyl]-4,4''-dicarboxylic acid (CAS 1842393-50-3)
- Lansoprazole Related Compound 6 (CAS 1683584-88-4)
- K252a (CAS 97161-97-2)
- (E)-4-(3-Methylpyridin-2-yl)but-3-en-2-one (CAS 1218785-49-9)
- 2-(2,3-Dioxoazepan-1-yl)acetic acid (CAS 2092689-41-1)
- 1-{1,4-diazaspiro[5.5]undecan-1-yl}-2,2,2-trifluoroethan-1-one hydrochloride (CAS 1955532-10-1)
- 4-(3-aminopropylamino)-2-(2,6-dioxo-3-piperidyl)isoindoline-1,3-dione (CAS 2093388-20-4)
- 2-Bromo-3-(bromomethyl)-5-methylpyridine (CAS 1227587-14-5)
- (3S)-Pyrrolidine-3-thiol (CAS 739328-11-1)
- [3-(4-tert-Butylphenyl)-2-methylpropyl](methyl)amine (CAS 110135-01-8)
- (2s)-2-Amino-n-(2-hydroxyethyl)propanamide hydrochloride (CAS 86150-09-6)
- N6-Benzoyl-2'-deoxyadenosine Hydrate (CAS 206752-42-3)
- Semaglutide Impurity 176 (CAS CATO-C4X-2226176)
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