Esomeprazole Impurity 43 CAS 149367-83-9
| CAS No. | 149367-83-9 |
| Molecular Formula | C8H8N2OS |
| Molecular Weight | 180.23 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Esomeprazole Impurity 43 (CAS 149367-83-9) is a certified pharmaceutical impurity reference standard with the molecular formula C8H8N2OS and a molecular weight of 180.23 g/mol.
Based on its molecular formula C8H8N2OS, Esomeprazole Impurity 43 contains a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 180.23 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.
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 manufactures Esomeprazole Impurity 43 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 | C8H8N2OS |
| Molecular Weight | 180.23 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | 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.) | 1999 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Esomeprazole Standards
- Esomeprazole Impurity 78 (CAS 49559-83-3)
- Esomeprazole Impurity 15 (CAS 208-75-3)
- Esomeprazole Impurity 82 (CAS 206990-64-9)
- Esomeprazole Impurity 109 (CAS 86604-79-7)
- Esomeprazole Impurity 48 (CAS CATO-C4X-111248)
- Esomeprazole Impurity 84 (CAS 149082-03-1)
- Esomeprazole Impurity 86 (CAS 287118-45-0)
- Esomeprazole Impurity 101 (CAS 84006-10-0)
Recommended Standards
- Esomeprazol EP Impurity A(Omeprazole EP Impurity A) (CAS 37052-78-1)
- Sildenafil Impurity 62 (CAS 116833-23-9)
- 3689AE 439608-32-9 5-Methyl-2-(methylthio)[1,3]oxazolo[4,5-b]pyridine C8H8N2OS (CAS 439608-32-9)
- Omeprazole Impurity 39 (CAS CATO-C4X-125539)
- Lifitegrast Impurity 138 (CAS CATO-C4X-2409138)
- Oxandrolone Impurity 8 (CAS 142793-21-3)
- Ibrutinib Impurity 168 (CAS CATO-C4X-1064168)
- m-PEG6-Hydrazide (CAS 1449390-64-0)
- 5-Bromo-N,N,2-trimethylbenzenesulfonamide (CAS 473477-02-0)
- tert-Butyl ((2,3-dihydropyrazolo[5,1-b]oxazol-3-yl)methyl)carbamate (CAS 2676868-33-8)
- 1,3-Dimethyl 2-[3-cyano-5-(trifluoromethyl)pyridin-2-yl]propanedioate (CAS 2055119-00-9)
- (4,5-Difluoro-2-nitrophenyl)methanol (CAS 914095-13-9)
- O-[2-(Trifluoromethoxy)ethyl]hydroxylamine hydrochloride (CAS 1803586-81-3)
- Hepcidin/LEAP-1 (Human); Liver-Expressed Antimicrobial Peptide (CAS 342790-21-0)
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