21-Bromo-2,3,5,6,8,9,11,12,14,15,17,18-dodecahydrobenzo[b][1,4,7,10,13,16,19]heptaoxacyclohenicosine CAS 120434-44-8

Purity 97%+In StockPharmaceutical Standards
CAS No.120434-44-8
Molecular FormulaC18H27BrO7
Molecular Weight435.31 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

21-Bromo-2,3,5,6,8,9,11,12,14,15,17,18-dodecahydrobenzo[b][1,4,7,10,13,16,19]heptaoxacyclohenicosine CAS 120434-44-8 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 435.31 g/mol gives 21-Bromo-2,3,5,6,8,9,11,12,14,15,17,18-dodecahydrobenzo[b][1,4,7,10,13,16,19]heptaoxacyclohenicosine distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

21-Bromo-2,3,5,6,8,9,11,12,14,15,17,18-dodecahydrobenzo[b][1,4,7,10,13,16,19]heptaoxacyclohenicosine (CAS 120434-44-8), molecular formula C18H27BrO7 and molecular weight 435.31 g/mol, is a CATO reference standard with documented purity and traceability.

Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system, 21-Bromo-2,3,5,6,8,9,11,12,14,15,17,18-dodecahydrobenzo[b][1,4,7,10,13,16,19]heptaoxacyclohenicosine is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 435.31 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

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.

CATO manufactures 21-Bromo-2,3,5,6,8,9,11,12,14,15,17,18-dodecahydrobenzo[b][1,4,7,10,13,16,19]heptaoxacyclohenicosine under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

Physical & Chemical Properties

Molecular FormulaC18H27BrO7
Molecular Weight435.31 g/mol
AppearanceOff-white to pale yellow crystalline powder. (slight halide-like odor)
Purity97%+
StorageStore at room temperature, keep sealed and dry
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityMay oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)5.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1991
Halogen ContentBr-containing

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