Cefmetazole Impurity 46 CAS 17347-32-9
| CAS No. | 17347-32-9 |
| Molecular Formula | C8H5BrS |
| Molecular Weight | 213.09 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 Cefmetazole Impurity 46.
Cefmetazole Impurity 46 (CAS 17347-32-9) is a certified pharmaceutical impurity reference standard with the molecular formula C8H5BrS and a molecular weight of 213.09 g/mol.
Owing to sulfur-containing functionality, bromine substitution, an aromatic ring system, Cefmetazole Impurity 46 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 213.09 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 Cefmetazole Impurity 46 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 | C8H5BrS |
| Molecular Weight | 213.09 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; 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.) | 1961 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 1 |
Related Cefmetazole Standards
- Cefmetazole Impurity 47 (CAS 4923-87-9)
- Cefmetazole impurity 75 (CAS 62671-38-9)
- Cefmetazole Impurity 8 (CAS CATO-C4X-15078)
- Cefmetazole Impurity 31 (CAS 55862-52-7)
- Cefmetazole Impurity 44 (CAS CATO-C4X-150744)
- Cefmetazole Impurity 58 (CAS CATO-C4X-150758)
- Cefmetazole Impurity 48 (CAS 310466-38-7)
- Cefmetazole Impurity 21 (CAS 52069-55-3)
Recommended Standards
- Brexpiprazole Impurity 32 (CAS 5118-13-8)
- 4-Bromotetrahydrothiopyran 1,1-Dioxide (CAS 38690-84-5)
- 2,3-Difluoro-4-(trifluoromethoxy)aniline (CAS 107570-54-7)
- 3-Bromotetrahydro-2h-thiopyran 1,1-dioxide (CAS 38690-81-2)
- Lumateperone Impurity 37 (CAS CATO-C4X-220137)
- Palbociclib Impurity 142 (CAS CATO-C4X-1125142)
- Riociguat Impurity 31 (CAS CATO-C4X-174931)
- 1-(4-(Cyclobutylamino)piperidin-1-yl)-2-methoxyethan-1-one (CAS 1247550-07-7)
- (3-Mercaptophenyl)boronic acid (CAS 352526-01-3)
- Potassium benzo[b]thiophen-2-yl-2-trifluoroborate (CAS 661465-45-8)
- 5,7-Dichloroquinolin-2-amine (CAS 1340437-57-1)
- 4-Bromo-1-(4-iodobenzyl)-1h-pyrazol-3-amine (CAS 1495450-20-8)
- 8-[4-(Propan-2-yl)phenyl]-5,12,14-trioxa-2-azatetracyclo[7.7.0.0^{3,7}.0^{11,15}]hexadeca-1(16),3(7),9,11(15)-tetraen-6-one (CAS 866138-53-6)
- Tirzepatide Impurity 20 (CAS CATO-C4X-324020)
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