Olmesartan Impurity 3 CAS 80841-78-7
| CAS No. | 80841-78-7 |
| Molecular Formula | C5H5ClO3 |
| Molecular Weight | 148.54 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Olmesartan Impurity 3 is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Olmesartan Impurity 3 (CAS 80841-78-7) is a certified pharmaceutical impurity reference standard with the molecular formula C5H5ClO3 and a molecular weight of 148.54 g/mol.
Olmesartan Impurity 3 (C5H5ClO3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
CATO manufactures Olmesartan Impurity 3 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 | C5H5ClO3 |
| Molecular Weight | 148.54 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1980 |
| Halogen Content | Cl-containing |
Related Olmesartan Standards
- Olmesartan Impurity 72 (CAS 95579-71-8)
- Olmesartan Impurity 62 (CAS 91526-17-9)
- Olmesartan Impurity 64 (CAS 51802-42-7)
- Olmesartan Impurity 106 (CAS CATO-C4X-1097106)
- Olmesartan Impurity 63 (CAS 144690-06-2)
- Olmesartan Impurity 10 (CAS 4437-70-1)
- Olmesartan Impurity 107 (CAS 105235-65-2)
- Olmesartan Impurity 70 (CAS 37830-90-3)
Recommended Standards
- <I>N</I>-(Chloromethyl-<SUP>13</SUP>C)succinimide (CAS 1202864-46-7)
- 74503-07-4 Acetic acid,2-chloro-2-oxo-, 2-propen-1-yl ester CTK5D9969 (CAS 74503-07-4)
- 2-Oxo-1-imidazolidine carbonyl chloride (CAS 13214-53-4)
- Methyl 4-chloro-4-oxobut-2-enoate (CAS 78140-66-6)
- Nicardipine Impurity 51 (CAS CATO-C4X-171051)
- Leucogen Impurity 10 (CAS CATO-C4X-288910)
- Repaglinide Impurity 25 (CAS CATO-C4X-118625)
- 2-((4,6,7-Trimethylquinazolin-2-yl)amino)quinazolin-4-ol (CAS 362000-15-5)
- n-[4-(2-bromoacetyl)phenyl]methanesulfonamide (CAS 5577-42-4)
- 5-Chloro-1-methyl-3,4-bis((p-tolylthio)methyl)-1H-pyrazole (CAS 318248-69-0)
- (E)-{1-[2-(4-fluorophenyl)cyclopropyl]ethylidene}({2-[3-(trifluoromethyl)phenoxy]ethoxy})amine (CAS 338401-23-3)
- 2,5-Dichloro-3-iodotoluene (CAS 1806283-33-9)
- Ketorolac Impurity 29 (CAS CATO-C4X-166929)
- Semaglutide impurity 27 (CAS CATO-C4X-222627)
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