1R 3S 4R-Entecavir H2O CAS CATO-C4X-107736
| CAS No. | CATO-C4X-107736 |
| Molecular Formula | C12H15N5O3 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 295.30 g/mol gives 1R 3S 4R-Entecavir H2O distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 1R 3S 4R-Entecavir H2O (CAS CATO-C4X-107736), a certified reference material (molecular formula C12H15N5O3H2O, MW 295.30 g/mol) for analytical method development and quality control.
1R 3S 4R-Entecavir H2O (C12H15N5O3H2O) contains an amino-acid-derived structure, an amide 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. 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 analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 1R 3S 4R-Entecavir H2O 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 | C12H15N5O3 H2O |
| Molecular Weight | 295.30 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 DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 5 |
Recommended Standards
- 1-(3,4-Dichlorophenyl)-3-(4-((1-(dimethylamino)propan-2-yl)amino)-6-methylpyrimidin-2-yl)guanidine (CAS 51386-95-9)
- 4-Cyclopropoxy-3-(dimethylamino)-N-methylpicolinamide (CAS 1243462-92-1)
- 4-Amino-1-((2R,5S)-2-((tert-butyldimethylsilyloxy)methyl)-1,3-oxathiolan-5-yl)-5-fluoropyrimidin-2(1H)-one-13C,15N2 (CAS 1246816-05-6)
- ethyl cis-2-iodocyclopropanecarboxylate (CAS 433731-93-2)
- 1-(3-Chlorophenyl)-3-(quinoxalin-6-yl)urea (CAS 672949-79-0)
- Tert-butyl (2S,4S)-2-(bromomethyl)-4-fluoropyrrolidine-1-carboxylate (CAS 2165773-57-7)
- 4-Azepan-1-ylpyridine-2-carboxylic acid (CAS 1094408-73-7)
- 2-Ethyl-6-hydroxybenzamide (CAS 1243281-35-7)
- 3-(2-Imino-6-methyl-4-oxo-1,2,3,4-tetrahydropyrimidin-5-yl)propanoic acid (CAS 90091-19-3)
- Semaglutide impurity 45 (CAS CATO-C4X-222645)
Why CATO?
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