Fmoc-cis-4-fluoro-Pro-OH CAS 203866-19-7
| CAS No. | 203866-19-7 |
| Molecular Formula | C20H18FNO4 |
| Molecular Weight | 355.36 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution, Fmoc-cis-4-fluoro-Pro-OH is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 355.36 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
Fmoc-cis-4-fluoro-Pro-OH (CAS 203866-19-7) is a high-purity analytical reference standard with the molecular formula C20H18FNO4 and a molecular weight of 355.36 g/mol.
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.
As a certified reference material (CRM), Fmoc-cis-4-fluoro-Pro-OH 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 | C20H18FNO4 |
| Molecular Weight | 355.36 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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.) | 2015 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
Related Fmoc Standards
- Fmoc-Trans-D-4-Fluoro-Pro-OH (CAS 913820-87-8)
- Fmoc-trans-4-fluoro-Pro-OH (CAS 203866-20-0)
- (S)-2-(Fmoc-amino)-3-hydroxy-3-methylbutanoic Acid (CAS 1217603-41-2)
- Fmoc-(RS)-2-amino-3-hydroxy-3-methylbutanoic acid (CAS 1246172-30-4)
- Fmoc-(2S,3S)-2-amino-3-methoxybutanoic acid (CAS 1279029-70-7)
- Fmoc-2-amino-3-methoxybutanoic acid (CAS 1396995-62-2)
- N-Fmoc-N,O-dimethyl-L-serine (CAS 1569103-64-5)
- 6-(Fmoc-amino)-4-oxahexanoic Acid (CAS 1654740-73-4)
Recommended Standards
- Biapenem-13C2,15N3 (CAS 120410-24-4 (unlabeled))
- 2-(2-Nitrobenzylidene)-3-oxobutanoic Acid, 2-Acetoxy-2-methylpropyl Ester-d6 (CAS 1185235-10-2)
- Ezetimibe Impurity 87 (CAS 2514695-40-8)
- 1306753-76-3 Ethyl 4-[(E)-2-(dimethylamino)vinyl]-8-(4-fluorophenyl)pyrazolo[5,1-c][1,2,4]triazine-3-carboxylate MFCD19103596 (CAS 1306753-76-3)
- 5-Bromo-2-methylthiophene-3-carboxylic acid (CAS 1344027-40-2)
- 2-((3,3-Dimethylbutoxy)methyl)butane-1-sulfonyl chloride (CAS 1479725-85-3)
- 3-(6,6-difluoro-3-bicyclo[3.1.0]hexanyl)prop-2-ynoic acid (CAS 2005584-80-3)
- [[2-(4-Methylpiperidin-1-yl)-2-oxoethyl](phenyl)-amino]acetic acid (CAS 1142212-00-7)
- (5-Iodo-1-pentyn-1-yl)trimethylsilane (CAS 35761-91-2)
- 1-Chloro-3-(methylsulfanyl)propane (CAS 13012-59-4)
- Chlorine Oxide-18O (CAS 166244-37-7)
- Montelukast Methoxymethoxy Impurity (CAS 184764-27-0)
- 6-Bromo-2-chloro-4-(trifluoromethyl)-1H-1,3-benzimidazole (CAS 1804185-95-2)
- Semaglutide impurity 101 (CAS CATO-C4X-2226101)
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