11F-406S 303149-43-1 [(3Z)-1-[(4-methylphenyl)methyl]-2-oxo-2,3-dihydro-1H-indol-3-ylidene]amino 2,2-dichloroacetate CAS 303149-43-1

Purity 97%+In StockPharmaceutical Standards
CAS No.303149-43-1
Molecular FormulaC18H14Cl2N2O3
Molecular Weight377.22 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

11F-406S 303149-43-1 [(3Z)-1-[(4-methylphenyl)methyl]-2-oxo-2,3-dihydro-1H-indol-3-ylidene]amino 2,2-dichloroacetate CAS 303149-43-1 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 377.22 g/mol gives 11F-406S 303149-43-1 [(3Z)-1-[(4-methylphenyl)methyl]-2-oxo-2,3-dihydro-1H-indol-3-ylidene]amino 2,2-dichloroacetate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

11F-406S 303149-43-1 [(3Z)-1-[(4-methylphenyl)methyl]-2-oxo-2,3-dihydro-1H-indol-3-ylidene]amino 2,2-dichloroacetate (CAS 303149-43-1), molecular formula C18H14Cl2N2O3 and molecular weight 377.22 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, 11F-406S 303149-43-1 [(3Z)-1-[(4-methylphenyl)methyl]-2-oxo-2,3-dihydro-1H-indol-3-ylidene]amino 2,2-dichloroacetate (C18H14Cl2N2O3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 377.22 g/mol, it falls into the moderately-high-molecular-weight range. 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).

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 FormulaC18H14Cl2N2O3
Molecular Weight377.22 g/mol
AppearancePale yellow to yellow crystalline powder. (slight halide-like odor, low volatility)
Purity97%+
StorageStore at 2-8°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; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)12.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2025
Halogen ContentCl-containing
Nitrogen Atoms2

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