Benzocaine Impurity 31 CAS 71134-95-7
| CAS No. | 71134-95-7 |
| Molecular Formula | C17H25NO3 |
| Molecular Weight | 291.39 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Benzocaine Impurity 31 (CAS 71134-95-7), a pharmacopoeial impurity reference standard (molecular formula C17H25NO3, MW 291.39 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C17H25NO3, Benzocaine Impurity 31 contains a steroid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 291.39 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
CATO manufactures Benzocaine Impurity 31 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C17H25NO3 |
| Molecular Weight | 291.39 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
| Nitrogen Atoms | 1 |
Related Benzocaine Standards
- Benzocaine N-D-Fructoside (CAS 78306-17-9)
- Benzocaine-N-glucoside (CAS 28315-50-6)
- Benzocaine Impurity 6 (CAS 23437-10-7)
- Benzocaine impurity 32 (CAS 5338-44-3)
- Benzocaine-13C6 (CAS 1391054-61-7)
- Benzocaine EP Impurity D (CAS 1333-08-0)
- Benzocaine EP Impurity C (CAS 582-33-2)
- Benzocaine EP Impurity H (CAS 619-45-4)
Recommended Standards
- Maropitant Impurty 5(M6) (CAS 683206-53-3)
- Ritodrine EP Impurity B (and enantiomer) (CAS CATO-C4X-27431)
- Imrecoxib Impurity 61 (CAS CATO-C4X-237961)
- Ritodrine EP Impurity C (and enantiomer) (CAS CATO-C4X-27432)
- Ponatinib Impurity 10 (CAS CATO-C4X-226910)
- Fudosteine Impurity 11 (CAS CATO-C4X-144711)
- Abemaciclib Impurity 152 (CAS CATO-C4X-2937152)
- methyl 4-[(1H-pyrrol-3-yl)carbonyl]benzoate (CAS 1375913-88-4)
- 1-(4-Chlorophenyl)prop-2-en-1-ol (CAS 58824-54-7)
- 2-Bromo-5-propylpyrazine (CAS 156573-08-9)
- Ezetimibe Impurity 115 (CAS CATO-C4X-1098115)
- Olmesartan impurity 103 (CAS 93641-16-8)
- 1-(5-Bromopyridin-3-yl)-N-(thiophen-2-ylmethyl)methanamine (CAS 1178049-92-7)
- Neuropeptide Y (porcine) trifluoroacetate salt (CAS 83589-17-7)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com