4-[(aminooxy)methyl]benzoic acid hydrochloride CAS 20228-85-7
| CAS No. | 20228-85-7 |
| Molecular Formula | C8H9NO3 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 203.62 g/mol gives 4-[(aminooxy)methyl]benzoic acid hydrochloride distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
4-[(aminooxy)methyl]benzoic acid hydrochloride (CAS 20228-85-7) is a high-purity analytical reference standard with the molecular formula C8H9NO3HCl and a molecular weight of 203.62 g/mol.
4-[(aminooxy)methyl]benzoic acid hydrochloride (C8H9NO3HCl) contains a nitrogen-containing heterocyclic scaffold, an amide 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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), 4-[(aminooxy)methyl]benzoic acid hydrochloride 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 Formula | C8H9NO3 HCl |
| Molecular Weight | 203.62 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related aminooxy Standards
- Aminooxy-PEG2-azide (CAS 1043426-13-6)
- 1,2-Bis(aminooxy)ethane Dihydrochloride (CAS 104845-83-2)
- 7-(Aminooxy)heptanoic acid hydrobromide (CAS 1049730-04-2)
- Aminooxy-PEG4-alcohol (CAS 106492-60-8)
- 3-(Aminooxy)-1-propanethiol HCl (CAS 1071-99-4)
- methyl 4-(aminooxy)butanoate (CAS 107903-02-6)
- N-(3-(aminooxy)propyl)acetamide hydrochloride (CAS 1134749-42-0)
- 2-(Aminooxy)acetonitrile (CAS 113501-34-1)
Recommended Standards
- 6-(2,4-Dioxo-1,4-dihydroquinazolin-3(2h)-yl)hexanoic acid (CAS 82603-64-3)
- N-(3-acetylphenyl)cyclobutanecarboxamide (CAS 109920-59-4)
- 2-(Benzyloxy)-5-bromo-1-chloro-3-fluorobenzene (CAS 1881293-72-6)
- Nk-611Hydrochloride (CAS 105760-98-3)
- 1-(5-Chloro-3-((ethylthio)methyl)-2-hydroxyphenyl)ethan-1-one (CAS 1157730-99-8)
- Idebenone Impurity 3 (CAS 58186-26-8)
- 6-Bromo-4-(chloromethyl)picolinaldehyde (CAS 1393543-83-3)
- 2-Phenyl-2,3,3a,4-tetrahydrocyclopenta[c]pyrrol-5(1H)-one (CAS 474095-48-2)
- 2-Propenoic acid, 2-methyl-, methyl ester, polymer with 2-ethylhexyl 2-propenoate (CAS 25265-15-0)
- Des-Ala21-Tirzepatide (CAS CATO-CPTD788952)
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