Entecavir Impurity 7 CAS 1263274-06-1
| CAS No. | 1263274-06-1 |
| Molecular Formula | C52H49N5O5 |
| Molecular Weight | 823.98 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Entecavir Impurity 7 (C52H49N5O5) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 31.0, corresponding to approximately 31 ring(s) or double-bond equivalent(s). With a molecular weight of 823.98 g/mol, it falls into the high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies Entecavir Impurity 7 (CAS 1263274-06-1), a certified reference material (molecular formula C52H49N5O5, MW 823.98 g/mol) for analytical method development and quality control.
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), Entecavir Impurity 7 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 | C52H49N5O5 |
| Molecular Weight | 823.98 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 31.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 5 |
Related Entecavir Standards
- Entecavir Impurity 12 (CAS 142217-78-5)
- Entecavir Impurity 79 (CAS CATO-C4X-107779)
- Entecavir Impurity 13 (CAS 142217-79-6)
- Entecavir Impurity 14 (CAS 142217-80-9)
- Entecavir Impurity 34 (CAS 1354695-79-6)
- Entecavir Impurity 53 (CAS CATO-C4X-107753)
- Entecavir Impurity 72 (CAS CATO-C4X-107772)
- Entecavir Impurity 82 (CAS CATO-C4X-107782)
Recommended Standards
- C3a (70-77) (CAS 63555-63-5)
- (b-Ala70)-C3a (H-1650.0025) (CAS 105931-71-3)
- (2R,3S,5R)-2-((Bis(4-methoxyphenyl)(phenyl)methoxy)methyl)-5-(2-(((dimethylamino)methylene)amino)-4-oxo-1,4-dihydro-7H-pyrrolo[2,3-d]pyrimidin-7-yl)tetrahydrofuran-3-yl (2-cyanoethyl) diisopropylphosphoramidite (CAS 121767-97-3)
- des-Orn8,Gly9NH2-Atosiban Impurity 74 (CAS CATO-C4X-229374)
- N,N-diethylpyrrolidine-2-carboxamide hydrochloride (CAS 1048649-03-1)
- N-(4-chlorobenzyl)-2-((3-cyano-4-(trifluoromethyl)-6,7,8,9-tetrahydro-5H-cyclohepta[b]pyridin-2-yl)thio)acetamide (CAS 626227-36-9)
- 3-((4-Fluorobenzyl)thio)-5-propyl-4H-1,2,4-triazol-4-amine (CAS 449746-19-4)
- Methyl 2',4'-difluoro-4-hydroxy-[1,1'-biphenyl]-3-carboxylate (CAS 55544-00-8)
- (2R,3R,4S,5S)-2-(6-Amino-9H-purin-9-yl)-5-(((2-fluoroethyl)thio)methyl)tetrahydrofuran-3,4-diol (CAS 134782-17-5)
- Ibuprofen Impurity 85 (CAS CATO-C4X-108285)
- 1-(4-Fluorophenyl)-1h-pyrazolo[3,4-d]pyrimidine-4-thiol (CAS 924022-47-9)
- 2-(2-(4-Chlorophenoxy)acetamido)-6-methyl-4,5,6,7-tetrahydrothieno[2,3-c]pyridine-3-carboxamide hydrochloride (CAS 1216700-74-1)
- 2-Amino-3-hydroxy-3-phenylpropanoic acid (CAS 69-96-5)
- Semaglutide Impurity 137 (x TFA Salt) (CAS CATO-C4X-2226137)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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