(S)-5-Amino-7-(3-aminopyrrolidin-1-yl)-1-cyclopropyl-6-fluoro-8-methyl-4-oxo-1,4-dihydroquinoline-3-carboxylic acid CAS 167888-21-3
| CAS No. | 167888-21-3 |
| Molecular Formula | C18H21FN4O3 |
| Molecular Weight | 360.38 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(S)-5-Amino-7-(3-aminopyrrolidin-1-yl)-1-cyclopropyl-6-fluoro-8-methyl-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (CAS 167888-21-3), molecular formula C18H21FN4O3 and molecular weight 360.38 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C18H21FN4O3, (S)-5-Amino-7-(3-aminopyrrolidin-1-yl)-1-cyclopropyl-6-fluoro-8-methyl-4-oxo-1,4-dihydroquinoline-3-carboxylic acid contains a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 360.38 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C18H21FN4O3 |
| Molecular Weight | 360.38 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2004 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 4 |
Related S Standards
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- 5-Amino-n-(3-fluoro-4-methoxybenzyl)-3,4-dimethylthieno[2,3-c]pyridazine-6-carboxamide (CAS 1451994-10-7)
- 5-((5-Amino-4-((3-amino-3-phenylpropyl)amino)pyridin-2-yl)amino)pyrazine-2-carbonitrile (CAS 1137476-48-2)
- 3-Amino-6-(pyridin-4-yl)-N-(p-tolyl)thieno[2,3-b]pyridine-2-carboxamide (CAS 496019-23-9)
- 3-Amino-N-(3-methylphenyl)-6-(pyridin-4-yl)thieno[2,3-b]pyridine-2-carboxamide (CAS 496019-18-2)
- 3-Amino-N-benzyl-6-(pyridin-4-yl)thieno[2,3-b]pyridine-2-carboxamide (CAS 496019-20-6)
- 4-(4-Amino-6-methylthieno[2,3-d]pyrimidin-5-yl)-N-phenylbenzamide (CAS 605660-36-4)
Recommended Standards
- Tert-butyl (5aR,8aR)-3-(2-fluorophenyl)-5a,6,8,8a-tetrahydro-4H,7H-pyrrolo[3,4-b][1,2,3]triazolo[1,5-d][1,4]oxazine-7-carboxylate (CAS 1632258-65-1)
- tert-Butyl 3-carbamoyl-2-(3-fluorophenyl)-4H,5H,6H,7H-pyrazolo[1,5-a]pyrazine-5-carboxylate (CAS 1773507-44-0)
- (R)-Nadifloxacin (CAS 160961-35-3)
- (5E)-3-(4-Fluorophenyl)-5-[(3-nitrophenyl)methylidene]-2-sulfanylidene-1,3-thiazolidin-4-one (CAS 300827-47-8)
- 5-Bromo-3-(tert-butyl)-1-methyl-1H-pyrazole (CAS 1187968-59-7)
- 2-(1-Oxoisoindolin-2-yl)benzoic acid (CAS 4770-69-8)
- 2H-chromene (CAS 254-04-6)
- (R)-2-((tert-butoxycarbonyl)amino)-4-cyclopropylbutanoic acid (CAS 2349893-77-0)
- Glycerin 2-acetate (CAS 100-78-7)
- 1-Chloro-3-fluoro-2-methoxy-4-methylbenzene (CAS 261762-80-5)
- Methyl 6-fluoro-4-((4-methoxybenzyl)amino)nicotinate (CAS 2187435-47-6)
- (2-Amino-[1,1'-biphenyl]-3-yl)methanol (CAS 1379359-79-1)
- 4-Ethyl-5-(7-methoxy-benzofuran-2-yl)-4H-[1,2,4]triazole-3-thiol (CAS 737807-25-9)
- Semaglutide Impurity 140 (CAS CATO-C4X-2226140)
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