Fmoc-L-allo-threoninol CAS 252049-03-9
| CAS No. | 252049-03-9 |
| Molecular Formula | C19H21NO4 |
| Molecular Weight | 327.38 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Fmoc-L-allo-threoninol.
Fmoc-L-allo-threoninol (CAS 252049-03-9), molecular formula C19H21NO4 and molecular weight 327.38 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, Fmoc-L-allo-threoninol (C19H21NO4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 327.38 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C19H21NO4 |
| Molecular Weight | 327.38 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 1 |
Related Fmoc Standards
- Fmoc-N-amido-PEG2-alcohol (CAS 299430-87-8)
- Fmoc-D-allo-threoninol (CAS 143143-54-8)
- Fmoc-L-threoninol (CAS 176380-53-3)
- Fmoc-D-threoninol (CAS 252049-02-8)
- Fmoc-(R)-3-amino-2-hydroxypropionic acid (CAS 211682-19-8)
- Fmoc-Ser-OH (CAS 73724-45-5)
- Fmoc-DL-Isoser-OH (CAS 161125-36-6)
- Fmoc-D-Ser-OH (CAS 116861-26-8)
Recommended Standards
- H-Gly-Pro-4MβNA (CAS 42761-76-2)
- 2-((4-Amino-6-methyl-5-oxo-4,5-dihydro-1,2,4-triazin-3-yl)thio)-N-(5-ethyl-1,3,4-thiadiazol-2-yl)acetamide (CAS 508186-71-8)
- Ac-Pro-Leu-Gly-OH (CAS 89626-38-0)
- Ethyl 1-benzyl-4-(2-fluorophenyl)pyrrolidine-3-carboxylate (CAS 874990-49-5)
- 3-Phenyl-N-({[3-(trifluoromethyl)phenyl]carbamothioyl}amino)-1H-indole-2-carboxamide (CAS 338415-09-1)
- 2-(Chloromethyl)-5-nitrobenzonitrile (CAS 121996-04-1)
- N-((1-Hydroxycyclopentyl)methyl)-3-phenylpropanamide (CAS 1216403-57-4)
- 6-(aminomethyl)-1,2,3,4-tetrahydro-1,3,5-triazine-2,4-dione hydrochloride (CAS 2060044-61-1)
- N-(2-(5-Amino-1,3,4-thiadiazol-2-yl)phenyl)benzothioamide (CAS 111324-13-1)
- 4-(4-Heptyloxyphenyl)-4-oxobutyric acid (CAS 143134-89-8)
- 8-Chloro-2-(3,4-dimethylphenyl)quinoline-4-carbonyl chloride (CAS 1160256-38-1)
- Cefotaxime S-Oxide 2 (CAS 71048-88-9)
- 1-Chloro-3,5-difluoro-2-methylbenzene (CAS 1261488-03-2)
- Tirzepatide Impurity 61 (CAS CATO-C4X-324061)
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