3-chloranyl-4-nitro-1-oxidanidyl-pyridin-1-ium 3-chloro-4-nitro-1-oxidopyridin-1-ium 76439-45-7 A838704 CAS 76439-45-7

Purity 97%+In StockPharmaceutical Standards
CAS No.76439-45-7
Molecular FormulaC5H3ClN2O3
Molecular Weight174.54 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

3-chloranyl-4-nitro-1-oxidanidyl-pyridin-1-ium 3-chloro-4-nitro-1-oxidopyridin-1-ium 76439-45-7 A838704 CAS 76439-45-7 chemical structure

Description

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

3-chloranyl-4-nitro-1-oxidanidyl-pyridin-1-ium 3-chloro-4-nitro-1-oxidopyridin-1-ium 76439-45-7 A838704 (CAS 76439-45-7), molecular formula C5H3ClN2O3 and molecular weight 174.54 g/mol, is a CATO reference standard with documented purity and traceability.

3-chloranyl-4-nitro-1-oxidanidyl-pyridin-1-ium 3-chloro-4-nitro-1-oxidopyridin-1-ium 76439-45-7 A838704 (C5H3ClN2O3) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

As a certified reference material (CRM), 3-chloranyl-4-nitro-1-oxidanidyl-pyridin-1-ium 3-chloro-4-nitro-1-oxidopyridin-1-ium 76439-45-7 A838704 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 FormulaC5H3ClN2O3
Molecular Weight174.54 g/mol
AppearanceOff-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor)
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in methanol, ethanol, DMSO, water
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)5.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1978
Halogen ContentCl-containing
Nitrogen Atoms2

Related chloranyl Standards

Recommended Standards

Why CATO?