5-Amino-3-methyl-1,2,3-oxadiazolium, inner salt hydrochloride CAS 5124-09-4

Purity 97%+In StockPharmaceutical Standards
CAS No.5124-09-4
Molecular FormulaC3H5N3O
Molecular WeightN/A
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5-Amino-3-methyl-1,2,3-oxadiazolium, inner salt hydrochloride CAS 5124-09-4 chemical structure

Description

5-Amino-3-methyl-1,2,3-oxadiazolium, inner salt hydrochloride (CAS 5124-09-4), molecular formula C3H5N3OHCl and molecular weight 135.55 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, 5-Amino-3-methyl-1,2,3-oxadiazolium, inner salt hydrochloride (C3H5N3OHCl) contains an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 2.0, corresponding to approximately 2 ring(s) or double-bond equivalent(s). With a molecular weight of 135.55 g/mol, it falls into the low-molecular-weight range. 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.

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 FormulaC3H5N3O HCl
Molecular Weight135.55 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)2.0
CAS Registry Year (est.)1958
Halogen ContentCl-containing
Nitrogen Atoms3

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