Ensifentrine impurity 16 CAS CATO-C4X-335316
| CAS No. | CATO-C4X-335316 |
| Molecular Formula | C16H17N3O3 |
| Molecular Weight | 299.32 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 Ensifentrine impurity 16.
As a process- or degradation-related impurity, Ensifentrine impurity 16 (CAS CATO-C4X-335316, C16H17N3O3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, Ensifentrine impurity 16 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 299.32 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 Ensifentrine impurity 16 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 | C16H17N3O3 |
| Molecular Weight | 299.32 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 3 |
Related Ensifentrine Standards
- Ensifentrine Impurity 2 (CAS 75535-95-4)
- Ensifentrine Impurity 26 (CAS CATO-C4X-335326)
- Ensifentrine impurity 50 (CAS 39201-71-3)
- Ensifentrine impurity 44 (CAS CATO-C4X-335344)
- Ensifentrine impurity 46 (CAS CATO-C4X-335346)
- Ensifentrine impurity (CAS 4359-64-2)
- Ensifentrine impurity 48 (CAS 20488-59-9)
- Ensifentrine impurity 45 (CAS 3088358-10-2)
Recommended Standards
- Phentolamine Impurity 15 (CAS CATO-C4X-224715)
- Kresoxim (free acid) (CAS 1007364-30-8)
- Olodaterol Impurity 11 (CAS CATO-C4X-194311)
- Lumateperone Impurity N2 (CAS 313544-31-9)
- N-Nitroso Acarbose impurity 12 (CAS CATO-C4X-117312)
- Urapidil Impurity 47 (CAS CATO-C4X-192447)
- Niraparib Impurity 18 HCl (CAS CATO-C4X-232918)
- 2-(2-(Cyclopropylmethoxy)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1185836-98-9)
- 4-(4-Methyl-1,4-diazepan-1-yl)benzoic acid hydrochloride hydrate (CAS 906352-84-9)
- 2,5-Difluoro-1,4-benzenedicarbonitrile (CAS 1897-49-0)
- 4-methyltetrahydro-1(2H)-pyrazinecarbodithioic acid,Na (CAS 5430-77-3)
- 4-Chlorobutanal dimethyl acetal, 97% (CAS 29882-07-3)
- 2-(4-(Aminomethyl)-3-(difluoromethyl)-5-iodopyridin-2-yl)acetic acid (CAS 1806859-42-6)
- Tirzepatide Impurity 17 (CAS CATO-C4X-324017)
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