(S)-3-chloro-N-(1-(4-(2-chloroacetyl)phenyl)-3-(1,3-dioxoisoindolin-2-yl)propan-2-yl)-4-isopropoxybenzamide CAS 1240137-81-8
| CAS No. | 1240137-81-8 |
| Molecular Formula | C29H26Cl2N2O5 |
| Molecular Weight | 553.43 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(S)-3-chloro-N-(1-(4-(2-chloroacetyl)phenyl)-3-(1,3-dioxoisoindolin-2-yl)propan-2-yl)-4-isopropoxybenzamide (CAS 1240137-81-8), molecular formula C29H26Cl2N2O5 and molecular weight 553.43 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, (S)-3-chloro-N-(1-(4-(2-chloroacetyl)phenyl)-3-(1,3-dioxoisoindolin-2-yl)propan-2-yl)-4-isopropoxybenzamide (C29H26Cl2N2O5) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 17.0, corresponding to approximately 17 ring(s) or double-bond equivalent(s). With a molecular weight of 553.43 g/mol, it falls into the moderately-high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C29H26Cl2N2O5 |
| Molecular Weight | 553.43 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 17.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
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