N-Nitroso Promethazine EP Impurity C CAS 94511-44-1
| CAS No. | 94511-44-1 |
| Molecular Formula | C16H17N3OS |
| Molecular Weight | 299.39 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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 supplies N-Nitroso Promethazine EP Impurity C (CAS 94511-44-1), a pharmacopoeial impurity reference standard (molecular formula C16H17N3OS, MW 299.39 g/mol) used for the identification and quantification of trace impurities in APIs.
N-Nitroso Promethazine EP Impurity C (C16H17N3OS) contains a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility; 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.
CATO manufactures N-Nitroso Promethazine 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 | C16H17N3OS |
| Molecular Weight | 299.39 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1984 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
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Recommended Standards
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- tert-Butyl (1-(2-aminoethyl)pyrrolidin-3-yl)(methyl)carbamate (CAS 1353974-58-9)
- 3-Bromo-6-methyl-1H-pyrazolo[3,4-d]pyrimidine (CAS 1511316-21-4)
- 2,3-Dihydro-1H-pyrano[3,2-f]quinolin-1-one (CAS 5252-47-1)
- Rel-tert-butyl ((6r,9r)-1-oxa-4-azaspiro[5.5]undecan-9-yl)carbamate (CAS 2137078-64-7)
- Semaglutide Impurity 176 (CAS CATO-C4X-2226176)
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