(9H-fluoren-9-yl)methyl (S)-(4-methyl-1-oxopentan-2-yl)carbamate CAS 146803-42-1

Purity 97%+In StockPharmaceutical Standards
CAS No.146803-42-1
Molecular FormulaC21H23NO3
Molecular Weight337.41 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

(9H-fluoren-9-yl)methyl (S)-(4-methyl-1-oxopentan-2-yl)carbamate CAS 146803-42-1 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 337.41 g/mol gives (9H-fluoren-9-yl)methyl (S)-(4-methyl-1-oxopentan-2-yl)carbamate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies (9H-fluoren-9-yl)methyl (S)-(4-methyl-1-oxopentan-2-yl)carbamate (CAS 146803-42-1), a certified reference material (molecular formula C21H23NO3, MW 337.41 g/mol) for analytical method development and quality control.

The molecular framework of (9H-fluoren-9-yl)methyl (S)-(4-methyl-1-oxopentan-2-yl)carbamate (C21H23NO3) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

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 FormulaC21H23NO3
Molecular Weight337.41 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 chloroform, dichloromethane, ethyl acetate, DMSO
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.)1998
Nitrogen Atoms1

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