(4-Nitrophenyl)acetylene (4-Nitrophenyl)ethyne (p-Nitrophenyl)acetylene 1-Ethynyl-4-nitrobenzene 1-Nitro-4-ethynylbenzene 4-Ethynyl-1-nitrobenzene 4-Ethynylnitrobenzene 4-Nitroethynylbenzene 4-Nitrophenylacetylene 937-31-5 NSC 71089 p-Ethynylnitrobenzene p-Nitroethynylbenzene CAS 937-31-5

Purity 97%+In StockPharmaceutical Standards
CAS No.937-31-5
Molecular FormulaC8H11NO2
Molecular Weight153.18 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

(4-Nitrophenyl)acetylene (4-Nitrophenyl)ethyne (p-Nitrophenyl)acetylene 1-Ethynyl-4-nitrobenzene 1-Nitro-4-ethynylbenzene 4-Ethynyl-1-nitrobenzene 4-Ethynylnitrobenzene 4-Nitroethynylbenzene 4-Nitrophenylacetylene 937-31-5 NSC 71089 p-Ethynylnitrobenzene p-Nitroethynylbenzene CAS 937-31-5 chemical structure

Description

As a certified reference material (CRM), (4-Nitrophenyl)acetylene (4-Nitrophenyl)ethyne (p-Nitrophenyl)acetylene 1-Ethynyl-4-nitrobenzene 1-Nitro-4-ethynylbenzene 4-Ethynyl-1-nitrobenzene 4-Ethynylnitrobenzene 4-Nitroethynylbenzene 4-Nitrophenylacetylene 937-31-5 NSC 71089 p-Ethynylnitrobenzene p-Nitroethynylbenzene 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.

CATO supplies (4-Nitrophenyl)acetylene (4-Nitrophenyl)ethyne (p-Nitrophenyl)acetylene 1-Ethynyl-4-nitrobenzene 1-Nitro-4-ethynylbenzene 4-Ethynyl-1-nitrobenzene 4-Ethynylnitrobenzene 4-Nitroethynylbenzene 4-Nitrophenylacetylene 937-31-5 NSC 71089 p-Ethynylnitrobenzene p-Nitroethynylbenzene (CAS 937-31-5), a certified reference material (molecular formula C8H11NO2, MW 153.18 g/mol) for analytical method development and quality control.

Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, (4-Nitrophenyl)acetylene (4-Nitrophenyl)ethyne (p-Nitrophenyl)acetylene 1-Ethynyl-4-nitrobenzene 1-Nitro-4-ethynylbenzene 4-Ethynyl-1-nitrobenzene 4-Ethynylnitrobenzene 4-Nitroethynylbenzene 4-Nitrophenylacetylene 937-31-5 NSC 71089 p-Ethynylnitrobenzene p-Nitroethynylbenzene is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 153.18 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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.

Physical & Chemical Properties

Molecular FormulaC8H11NO2
Molecular Weight153.18 g/mol
AppearanceOff-white to pale yellow crystalline powder. (faint amine-like odor)
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)4.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1957
Nitrogen Atoms1

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