(3aR,4S,9bS)-4-(4-fluorophenyl)-3a,4,5,9b-tetrahydro-3H-cyclopenta[c]quinoline-8-cArboxylic acid CAS 1391570-73-2
| CAS No. | 1391570-73-2 |
| Molecular Formula | C19H16FNO2 |
| Molecular Weight | 309.33 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution, (3aR,4S,9bS)-4-(4-fluorophenyl)-3a,4,5,9b-tetrahydro-3H-cyclopenta[c]quinoline-8-cArboxylic acid is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 309.33 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
(3aR,4S,9bS)-4-(4-fluorophenyl)-3a,4,5,9b-tetrahydro-3H-cyclopenta[c]quinoline-8-cArboxylic acid (CAS 1391570-73-2), molecular formula C19H16FNO2 and molecular weight 309.33 g/mol, is a CATO reference standard with documented purity and traceability.
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 | C19H16FNO2 |
| Molecular Weight | 309.33 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
Recommended Standards
- 3-(2-Amino-5-benzoxazolyl)-1-(1-methylethyl)-1H-pyrazolo[3,4-d]pyrimidin-4-amine (CAS 1224844-38-5)
- (3R,4S)-rel-1-(tert-Butoxycarbonyl)-4-(2-fluorophenyl)pyrrolidine-3-carboxylic acid (CAS 1414580-85-0)
- (3R,4S)-1-(tert-Butoxycarbonyl)-4-(4-fluorophenyl)pyrrolidine-3-carboxylic acid (CAS 1218764-13-6)
- N-(3-(2-Methyl-2H-tetrazol-5-yl)phenyl)-2,4,5,6-tetrahydrocyclopenta[c]pyrazole-3-carboxamide (CAS 1441904-77-3)
- 2-Hydroxypyrimidine-5-boronic Acid (CAS 373384-19-1)
- Dantrolene-d4 (CAS 7261-97-4 (unlabeled))
- 2-(pyridazin-3-yl)ethan-1-ol (CAS 101479-62-3)
- (3R)-3-amino-1-methyl-piperidin-2-one;hydrochloride (CAS 1951424-91-1)
- 2-Thioxo-2,3-dihydro-1H-spiro[benzo[h]quinazoline-5,1'-cyclopentan]-4(6H)-one (CAS 286000-28-0)
- 1-(4-Chlorophenyl)-N-(2,4-dichlorophenyl)-6-hydroxy-2-oxo-1,2-dihydropyrimidine-4-carboxamide (CAS 861212-22-8)
- rel-(5R,7R)-7-[[4-(2,6-Dichlorophenyl)-1-piperidinyl]methyl]-6,7,8,9-tetrahydro-1-methyl-5H-benzocyclohepten-5-ol Hydrochloride (CAS 371980-94-8)
- Vonoprazan Impurity 277 (CAS CATO-C4X-1020277)
- 3-[5-(methoxymethyl)-1,2,4-oxadiazol-3-yl]morpholine hydrochloride (CAS 1461715-10-5)
- Tirzepatide Impurity 24 X TFA Salt (CAS CATO-C4X-324024)
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