Clenbuterol EP impurity D CAS 99-92-3
| CAS No. | 99-92-3 |
| Molecular Formula | C8H9NO |
| Molecular Weight | 135.16 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Clenbuterol EP impurity D is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
As a process- or degradation-related impurity, Clenbuterol EP impurity D (CAS 99-92-3, C8H9NO) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C8H9NO, Clenbuterol EP impurity D contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 135.16 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 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 Clenbuterol EP impurity D 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 | C8H9NO |
| Molecular Weight | 135.16 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
Related Clenbuterol Standards
- Clenbuterol impurity 10 (CAS 100-19-6)
- Clenbuterol impurity 11 (CAS 6953-83-9)
- Clenbuterol EP impurity A (CAS 62909-66-4)
- Clenbuterol EP impurity C (CAS 37148-48-4)
- Clenbuterol Impurity 14 (CAS 37159-31-2)
- Clenbuterol Impurity 14 (CAS 38339-09-2)
- Clenbuterol impurity 8 (CAS CATO-C4X-19938)
- Clenbuterol Impurity 16 (CAS 38339-10-5)
Recommended Standards
- Fosfomycin Impurity 78 (CAS 74178-02-2)
- N-Methylbenzamide (CAS 613-93-4)
- Acetaminophen EP impurity D (CAS 103-84-4)
- p-Toluamide (CAS 619-55-6)
- Montelukast Impurity 53 (CAS 152922-71-9)
- Tegoprazan impurity 46 (CAS CATO-C4X-229746)
- Tobramycin Impurity 8 (CAS CATO-C4X-22008)
- 11-(4-Isopropylphenyl)-3,3-dimethyl-2,3,4,5,10,11-hexahydro-1H-dibenzo[b,e][1,4]diazepin-1-one (CAS 330952-10-8)
- N2-(2-(2-Hydroxyethoxy)ethyl)-N4-(pyridin-3-yl)-L-asparagine (CAS 1047666-69-2)
- 1-Chloro-2-(cyclopentyloxy)-3-fluoro-5-nitrobenzene (CAS 1881332-35-9)
- Rhaponticin (CAS 155-58-8)
- Trazodone Impurity 4 (CAS 1263278-79-0)
- 1-(4-Amino-3-nitrophenyl)propan-2-ol (CAS 855444-70-1)
- Semaglutide impurity 201 (CAS CATO-C4X-2226201)
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