Articaine impurity 23 CAS 2689-70-5
| CAS No. | 2689-70-5 |
| Molecular Formula | C7H10O3S |
| Molecular Weight | 174.22 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Articaine impurity 23 is closely related to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Articaine impurity 23 (CAS 2689-70-5) is a certified pharmaceutical impurity reference standard with the molecular formula C7H10O3S and a molecular weight of 174.22 g/mol.
Articaine impurity 23 (C7H10O3S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
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 | C7H10O3S |
| Molecular Weight | 174.22 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1957 |
| Sulfur Atoms | 1 |
Related Articaine Standards
- Articaine Hydrochloride EP Impurity I (CAS 85006-31-1)
- Articaine Impurity N21 (CAS 13781-65-2)
- Articaine Impurity 12 (CAS 39098-97-0)
- Articaine Impurity 25 (CAS CATO-C4X-191225)
- Articaine impurity 24 (CAS 7400-45-5)
- Articaine impurity 18 (CAS CATO-C4X-191218)
- Articaine Impurity14 (CAS CATO-C4X-191214)
- Articaine Impurity C86 (CAS 2169099-30-1)
Recommended Standards
- 5-(4-fluorophenyl)-2H-1,2,3,4-tetrazole 5-(4-fluorophenyl)-2H-tetrazole 50907-21-6 A828350 (CAS 50907-21-6)
- 6-Isopropyl-1H-indol-4-amine (CAS 1000343-80-5)
- Tetrahydrothiophene-2,5-dicarboxamide (CAS 98484-56-1)
- 1-(1,3,4-thiadiazol-2-ylthio)acetone (CAS 1000932-13-7)
- Etoricoxib Impurity 28 (CAS 5470-70-2)
- Enzalutamide Impurity 48 (CAS CATO-C4X-101648)
- Levocabastine EP Impurity L (CAS CATO-C4X-228912)
- {[4-(6-Dimethylamino-4-trifluoromethyl-pyridin-2-yl)-benzyl]-methyl-amino}-acetic acid ethyl ester (CAS 1311280-39-3)
- Triethoxy(isobutyl)silane (CAS 17980-47-1)
- 2-(4-Chloro-3-methoxyphenyl)pyrrolidine (CAS 1270380-01-2)
- rel-(+)-1,2-Bis((R)-phenyl(o-tolyl)phosphino)ethane (CAS 81157-88-2)
- 3',4'-Difluoro-[1,1'-biphenyl]-4-amine (CAS 1184136-90-0)
- 1-(4-Chlorophenyl)-3-((1,3-dimethyl-1H-pyrazol-4-yl)methyl)urea (CAS 525578-20-5)
- Tau Peptide (307-321) trifluoroacetate salt (CAS 330456-50-3)
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