Carbamazepine EP Impurity G CAS 59690-97-0
| CAS No. | 59690-97-0 |
| Molecular Formula | C15H11BrN2O |
| Molecular Weight | 315.16 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Carbamazepine EP Impurity G (CAS 59690-97-0), a pharmacopoeial impurity reference standard (molecular formula C15H11BrN2O, MW 315.16 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C15H11BrN2O, Carbamazepine EP Impurity G contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 315.16 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
As a certified reference material (CRM), Carbamazepine EP Impurity G 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 | C15H11BrN2O |
| Molecular Weight | 315.16 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1974 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Carbamazepine Standards
- Carbamazepine Impurity 19 (CAS CATO-C4X-118119)
- Carbamazepine Impurity 15 (CAS CATO-C4X-118115)
- Carbamazepine Impurity 22 (CAS CATO-C4X-118122)
- Carbamazepine Impurity 32 (CAS 40421-05-4)
- Carbamazepine Impurity 12 (CAS 143667-53-2)
- Carbamazepine 10-Acetoxy Impurity (CAS 952740-00-0)
- Carbamazepine Impurity 11 (CAS 33948-20-8)
- Carbamazepine Impurity 17 (CAS CATO-C4X-118117)
Recommended Standards
- tert-Butyl 8-bromo-2H-pyrido[3,2-b][1,4]oxazine-4(3H)-carboxylate (CAS 2253853-12-0)
- 4,4,4-Trifluoro-1-(3-nitrophenyl)-3-(trifluoromethyl)but-2-en-1-ol (CAS 100482-54-0)
- tert-Butyl 7-bromo-2,3-dihydro-1H-pyrido[2,3-b][1,4]oxazine-1-carboxylate (CAS 2168945-54-6)
- 3-Iodo-N-(thiophen-3-ylmethyl)aniline (CAS 1037142-52-1)
- Cilostazol Impurity 13 (CAS 22716-03-6)
- Dapagliflozin Impurity 204 (CAS CATO-C4X-1138204)
- Erlotinib Impurity 7 (CAS 882420-21-5)
- 2-Chloro-N-(cyclopropylmethyl)pyridin-3-amine (CAS 1155017-73-4)
- 4-Methyl-7-nitro-1H-indole (CAS 289483-80-3)
- 4-Fluorocyclohex-3-enecarbonitrile (CAS 459-53-0)
- (S)-tert-Butyl 6-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-2-aminohexanoate hydrochloride (CAS 330795-57-8)
- Tert-butyl (2-fluoro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-3-yl)carbamate (CAS 1310405-07-2)
- 4-Hydroxy-6-methyl-2-oxo-2H-pyran-3-carbaldehyde O-(4-methylbenzyl)oxime (CAS 477859-30-6)
- Semaglutide impurity 89 (CAS CATO-C4X-222689)
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