4-((3aS,4R,9bR)-6-Ethoxy-3a,4,5,9b-tetrahydro-3H-cyclopenta[c]quinolin-4-yl)benzoic acid CAS 1357248-83-9
| CAS No. | 1357248-83-9 |
| Molecular Formula | C21H21NO3 |
| Molecular Weight | 335.40 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
4-((3aS,4R,9bR)-6-Ethoxy-3a,4,5,9b-tetrahydro-3H-cyclopenta[c]quinolin-4-yl)benzoic acid (CAS 1357248-83-9), molecular formula C21H21NO3 and molecular weight 335.40 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, 4-((3aS,4R,9bR)-6-Ethoxy-3a,4,5,9b-tetrahydro-3H-cyclopenta[c]quinolin-4-yl)benzoic acid is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 335.40 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
As a certified reference material (CRM), 4-((3aS,4R,9bR)-6-Ethoxy-3a,4,5,9b-tetrahydro-3H-cyclopenta[c]quinolin-4-yl)benzoic acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C21H21NO3 |
| Molecular Weight | 335.40 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 chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Nitrogen Atoms | 1 |
Recommended Standards
- tert-Butyl 4-(5-(methoxycarbonyl)-4-methylpyridin-2-yl)piperazine-1-carboxylate (CAS 1355237-40-9)
- Methyl 4-((4-(morpholinomethyl)phenyl) ethynyl)benzoate (CAS 1363374-76-8)
- tert-Butyl 4-(5-(methoxycarbonyl)-6-methylpyridin-2-yl)piperazine-1-carboxylate (CAS 1355174-68-3)
- 2-(5-(tert-Butoxycarbonyl)-2-(cyclopropylmethyl)-4,5,6,7-tetrahydro-2H-pyrazolo[4,3-c]pyridin-7-yl)acetic acid (CAS 1391733-79-1)
- 5-Amino-N-methylbenzo[b]thiophene-2-carboxamide (CAS 1160264-01-6)
- (2-Fluorophenyl)(quinolin-3-yl)methanone (CAS 1187165-99-6)
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