Fmoc-Leu-Thr(Psi(Me,Me)pro)-OH CAS 955048-89-2

Purity 97%+In StockPharmaceutical Standards
CAS No.955048-89-2
Molecular FormulaC28H34N2O6
Molecular Weight494.59 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Fmoc-Leu-Thr(Psi(Me,Me)pro)-OH CAS 955048-89-2 chemical structure

Description

Fmoc-Leu-Thr(Psi(Me,Me)pro)-OH (C28H34N2O6) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

Fmoc-Leu-Thr(Psi(Me,Me)pro)-OH (CAS 955048-89-2) is a high-purity analytical reference standard with the molecular formula C28H34N2O6 and a molecular weight of 494.59 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.

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 FormulaC28H34N2O6
Molecular Weight494.59 g/mol
AppearancePale yellow to yellow crystalline powder
Purity97%+
StorageStore in a cool place (≤25°C), protect from light, keep sealed and dry
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)13.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1987
Nitrogen Atoms2

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