(S)-8-Hydroxy-7-methoxy-1,2,3,11a-tetrahydro-5H-benzo[e]pyrrolo[1,2-a][1,4]diazepine-5,11(10H)-dione CAS 132391-70-9
| CAS No. | 132391-70-9 |
| Molecular Formula | C13H14N2O4 |
| Molecular Weight | 262.26 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 262.26 g/mol gives (S)-8-Hydroxy-7-methoxy-1,2,3,11a-tetrahydro-5H-benzo[e]pyrrolo[1,2-a][1,4]diazepine-5,11(10H)-dione distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
(S)-8-Hydroxy-7-methoxy-1,2,3,11a-tetrahydro-5H-benzo[e]pyrrolo[1,2-a][1,4]diazepine-5,11(10H)-dione (CAS 132391-70-9), molecular formula C13H14N2O4 and molecular weight 262.26 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of (S)-8-Hydroxy-7-methoxy-1,2,3,11a-tetrahydro-5H-benzo[e]pyrrolo[1,2-a][1,4]diazepine-5,11(10H)-dione (C13H14N2O4) is characterized by a nitrogen-containing heterocyclic scaffold, 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).
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 | C13H14N2O4 |
| Molecular Weight | 262.26 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
| Nitrogen Atoms | 2 |
Related S Standards
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Recommended Standards
- 6-Fluoro-2-(1H-pyrrol-1-yl)benzo[d]thiazole-4-carboxylic acid (CAS 1322604-98-7)
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- Diethyl1H-pyrrolo[2,3-b]pyridine-2,6-dicarboxylate (CAS 1311569-08-0)
- diethyl imidazo[1,2-a]pyridine-2,8-dicarboxylate (CAS 133426-99-0)
- 1-(2,6-Difluorophenyl)butan-1-one (CAS 95727-77-8)
- 2-Methyl-3-oxo-1,2,3,4-tetrahydropyrrolo[1,2-a]pyrazine-6-carbaldehyde (CAS 151163-96-1)
- 5-[[4-[2-(5-Ethyl-2-pyridinyl)ethoxy-d4]phenyl]methylene]-2,4-thiazolidinedione (CAS 1217211-89-6)
- 2,2'-(1,3-Phenylenedisulfonyl)bis(benzene-1,4-diol) (CAS 29624-68-8)
- 4-Glutathionyl Cyclophosphamide (CAS 77273-67-7)
- 3-(Difluoromethoxy)cyclopentanamine (CAS 1592408-49-5)
- Metronidazole-d (CAS 1794791-19-7)
- ROX NHS ester, 5-isomer (CAS 344402-35-3)
- 2-Fluoro-5-methoxy-3-(trifluoromethyl)aniline (CAS 1262198-05-9)
- Semaglutide impurity 274 (CAS CATO-C4X-2226274)
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