Fmoc-Thr(psi(me,me)pro)-OH CAS 2023823-19-8
| CAS No. | 2023823-19-8 |
| Molecular Formula | C22H23NO5 |
| Molecular Weight | 381.42 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.
Fmoc-Thr(psi(me,me)pro)-OH (CAS 2023823-19-8), molecular formula C22H23NO5 and molecular weight 381.42 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C22H23NO5, Fmoc-Thr(psi(me,me)pro)-OH contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 381.42 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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 | C22H23NO5 |
| Molecular Weight | 381.42 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 methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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.) | 1996 |
| Nitrogen Atoms | 1 |
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- 1-Oxa-9-azaspiro[5.5]undecane oxalate (CAS 1416354-30-7)
- 3-(2-ethylphenoxy)propanoic acid (CAS 938125-47-4)
- 1,3,4-Thiadiazole-2-carbonitrile (CAS 1121585-02-1)
- 1-(tert-Butylthio)-2-propyl-2H-isoindole (CAS 64807-91-6)
- 1-(bromomethyl)-3-chloranyl-5-(trifluoromethyl)benzene 1-(bromomethyl)-3-chloro-5-(trifluoromethyl)benzene 261763-22-8 A818280 (CAS 261763-22-8)
- Des-Gln24-Tirzepatide (CAS CATO-CPTD788949)
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