Phenobarbital EP Impurity C CAS 76-94-8
| CAS No. | 76-94-8 |
| Molecular Formula | C11H10N2O3 |
| Molecular Weight | 218.21 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Phenobarbital EP Impurity C.
Phenobarbital EP Impurity C (CAS 76-94-8) is a certified pharmaceutical impurity reference standard with the molecular formula C11H10N2O3 and a molecular weight of 218.21 g/mol.
Structurally, Phenobarbital EP Impurity C (C11H10N2O3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 218.21 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
CATO manufactures Phenobarbital EP Impurity C 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 | C11H10N2O3 |
| Molecular Weight | 218.21 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 2 |
Related Phenobarbital Standards
- Phenobarbital Impurity 5 (CAS 5909-45-5)
- Phenobarbital Impurity 01 (CAS 69125-70-8)
- Phenobarbital Impurity 1 (CAS CATO-C4X-19421)
- Phenobarbital EP Impurity B (CAS 58042-96-9)
- Phenobarbital Impurity6 (CAS 130690-55-0)
- Phenobarbital (CAS 50-06-6)
- Phenobarbital-D5 (CAS 73738-05-3)
- Phenobarbital-D5 (deuterium label on ring) (CAS 72793-46-5)
Recommended Standards
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- Decitabine Impurity 42 (CAS CATO-C4X-113742)
- Avatrombopag impurity 123 (CAS CATO-C4X-2234123)
- Tadalafil Impurity 172 (CAS CATO-C4X-1087172)
- Cefpodoxime Proxetil Impurity 20 (CAS CATO-C4X-157920)
- (E)-N'-((3-hydroxyisobenzofuran-1-yl)methylene)-2,5-bis(2,2,2-trifluoroethoxy)benzohydrazide (CAS 338394-28-8)
- Edoxaban Impurity N82 (CAS 165948-23-2)
- (1S,2R)-Boc-2-aminocyclohex-3-ene-carboxylic acid (CAS 233600-33-4)
- 1-benzyl-3-methyl-azetidin-3-ol;hydrochloride (CAS 2708292-26-4)
- Ethyl 2-bromo-4,4,4-trifluoro-3-methylbutanoate (CAS 2024-54-6)
- 5-Hydroxypyrazine-2-carboxylic acid (CAS 34604-60-9)
- Semaglutide Impurity 147 (CAS CATO-C4X-2226147)
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