(S)-3-(Fmoc-amino)-4-methylpentanoic Acid CAS 266318-79-0

Purity 97%+In StockPharmaceutical Standards
CAS No.266318-79-0
Molecular FormulaC21H23NO4
Molecular Weight353.41 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

(S)-3-(Fmoc-amino)-4-methylpentanoic Acid CAS 266318-79-0 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 353.41 g/mol gives (S)-3-(Fmoc-amino)-4-methylpentanoic Acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

(S)-3-(Fmoc-amino)-4-methylpentanoic Acid (CAS 266318-79-0), molecular formula C21H23NO4 and molecular weight 353.41 g/mol, is a CATO reference standard with documented purity and traceability.

Based on its molecular formula C21H23NO4, (S)-3-(Fmoc-amino)-4-methylpentanoic Acid 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 353.41 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).

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 FormulaC21H23NO4
Molecular Weight353.41 g/mol
AppearancePale yellow to yellow crystalline powder
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)11.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2025
Nitrogen Atoms1

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