165739-71-9 8-Chloro-3-methoxy-11-(1-methyl-4-piperidinyl)-6,11-dihydro-5H-benzo[5,6]-cyclohepta[1,2-b]pyridin-11-ol 8-Chloro-6,11-dihydro-3-methoxy-11-(1-methyl-4-piperidinyl)-5H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-ol CAS 165739-71-9

Purity 97%+In StockPharmaceutical Standards
CAS No.165739-71-9
Molecular FormulaC21H25ClN2O2
Molecular Weight372.89 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

165739-71-9 8-Chloro-3-methoxy-11-(1-methyl-4-piperidinyl)-6,11-dihydro-5H-benzo[5,6]-cyclohepta[1,2-b]pyridin-11-ol 8-Chloro-6,11-dihydro-3-methoxy-11-(1-methyl-4-piperidinyl)-5H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-ol CAS 165739-71-9 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 372.89 g/mol gives 165739-71-9 8-Chloro-3-methoxy-11-(1-methyl-4-piperidinyl)-6,11-dihydro-5H-benzo[5,6]-cyclohepta[1,2-b]pyridin-11-ol 8-Chloro-6,11-dihydro-3-methoxy-11-(1-methyl-4-piperidinyl)-5H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-ol distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

165739-71-9 8-Chloro-3-methoxy-11-(1-methyl-4-piperidinyl)-6,11-dihydro-5H-benzo[5,6]-cyclohepta[1,2-b]pyridin-11-ol 8-Chloro-6,11-dihydro-3-methoxy-11-(1-methyl-4-piperidinyl)-5H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-ol (CAS 165739-71-9), molecular formula C21H25ClN2O2 and molecular weight 372.89 g/mol, is a CATO reference standard with documented purity and traceability.

The molecular framework of 165739-71-9 8-Chloro-3-methoxy-11-(1-methyl-4-piperidinyl)-6,11-dihydro-5H-benzo[5,6]-cyclohepta[1,2-b]pyridin-11-ol 8-Chloro-6,11-dihydro-3-methoxy-11-(1-methyl-4-piperidinyl)-5H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-ol (C21H25ClN2O2) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

As a certified reference material (CRM), 165739-71-9 8-Chloro-3-methoxy-11-(1-methyl-4-piperidinyl)-6,11-dihydro-5H-benzo[5,6]-cyclohepta[1,2-b]pyridin-11-ol 8-Chloro-6,11-dihydro-3-methoxy-11-(1-methyl-4-piperidinyl)-5H-benzo[5,6]cyclohepta[1,2-b]pyridin-11-ol meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

Molecular FormulaC21H25ClN2O2
Molecular Weight372.89 g/mol
AppearancePale yellow to yellow crystalline powder. (slight halide-like odor)
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)10.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2004
Halogen ContentCl-containing
Nitrogen Atoms2

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