Ethyl 7-methyl-3-phenyl-1H-indole-2-carboxylate CAS 138653-55-1

Purity 97%+In StockPharmaceutical Standards
CAS No.138653-55-1
Molecular FormulaC18H17NO2
Molecular Weight279.33 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Ethyl 7-methyl-3-phenyl-1H-indole-2-carboxylate CAS 138653-55-1 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 279.33 g/mol gives Ethyl 7-methyl-3-phenyl-1H-indole-2-carboxylate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

Ethyl 7-methyl-3-phenyl-1H-indole-2-carboxylate (CAS 138653-55-1), molecular formula C18H17NO2 and molecular weight 279.33 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, Ethyl 7-methyl-3-phenyl-1H-indole-2-carboxylate (C18H17NO2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 279.33 g/mol, it falls into the medium-molecular-weight range. 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 FormulaC18H17NO2
Molecular Weight279.33 g/mol
AppearancePale yellow to yellow crystalline powder
Purity97%+
StorageStore at 2-8°C, protect from light
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.)1996
Nitrogen Atoms1

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