4-Aminobenzoic acid hydrochloride CAS 22669-27-8
| CAS No. | 22669-27-8 |
| Molecular Formula | C7H7NO2 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C7H7NO2HCl, 4-Aminobenzoic acid hydrochloride contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 173.60 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
4-Aminobenzoic acid hydrochloride (CAS 22669-27-8), molecular formula C7H7NO2HCl and molecular weight 173.60 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 Formula | C7H7NO2 HCl |
| Molecular Weight | 173.60 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 tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; 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.) | 1963 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Aminobenzoic Standards
- 3-acetyl-4-aminobenzoic acid methyl ester (CAS 111714-47-7)
- 118872-62-1 4-AMINOBENZOIC-2,6-D2 ACID (CAS 118872-62-1)
- 4-Aminobenzoic acid 2-methoxyethyl ester oxalic acid salt (CAS 1197238-90-6)
- 4-Aminobenzoic acid 2-(1-methylpropylidene)hydrazide (CAS 119821-27-1)
- 3-Acetyl-5-aminobenzoic acid (CAS 1267109-44-3)
- 2-Aminobenzoic Acid Methyl Ester (CAS 134-20-3)
- 3-Aminobenzoic acid hydrochloride (CAS 15151-51-6)
- 4-Aminobenzoic Acid-13C6 (CAS 161406-19-5)
Recommended Standards
- 6-Azaspiro[3.5]Nonan-5-one (CAS 1217862-77-5)
- 4H-Indeno[5,6-d]oxazole (CAS 17491-88-2)
- 9-Amino-3,4-dihydroacridin-1(2H)-one (CAS 104675-26-5)
- 4-(1-(Benzo[d][1,3]dioxol-5-yloxy)ethyl)pyrimidin-2-amine (CAS 685106-85-8)
- 2-((3,5-Dioxo-2,3,4,5-tetrahydro-1,2,4-triazin-6-yl)amino)butanoic acid (CAS 292170-09-3)
- 5-(3-(Trifluoromethyl)phenyl)-[1,2,4]triazolo[1,5-a]pyrimidine (CAS 75175-86-9)
- 4-Morpholinopyrimidine-2-carboxylic acid (CAS 1557920-92-9)
- Thioctic acid impurity 57 (CAS CATO-C4X-152657)
- Piracetam Impurity 20 (CAS 94359-90-7)
- Semaglutide impurity 272 (CAS CATO-C4X-2226272)
Why CATO?
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