Dopamine Impurity 118 CAS CATO-C4X-1908118
| CAS No. | CATO-C4X-1908118 |
| Molecular Formula | C16H20N2O4 |
| Molecular Weight | 304.34 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 Dopamine Impurity 118.
As a process- or degradation-related impurity, Dopamine Impurity 118 (CAS CATO-C4X-1908118, C16H20N2O4) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Dopamine Impurity 118 (C16H20N2O4) contains a flavonoid core, 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 304.34 g/mol, it falls into the moderately-high-molecular-weight range. 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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C16H20N2O4 |
| Molecular Weight | 304.34 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
Related Dopamine Standards
- Dopamine Impurity 114 (CAS CATO-C4X-1908114)
- Dopamine Impurity 62 (CAS CATO-C4X-190862)
- Dopamine Impurity 95 (CAS CATO-C4X-190895)
- Dopamine Impurity 108 (CAS CATO-C4X-1908108)
- Dopamine Impurity 109 (CAS CATO-C4X-1908109)
- Dopamine Impurity 97 (CAS CATO-C4X-190897)
- Dopamine impurity 110 (CAS CATO-C4X-1908110)
- Dopamine Impurity 48 (CAS CATO-C4X-190848)
Recommended Standards
- Epinephrine /Adrenaline Impurity 120 (CAS CATO-C4X-1849120)
- Naproxen Impurity 35 (CAS CATO-C4X-170835)
- Scopolamine impurity 27 (CAS CATO-C4X-195827)
- Naproxen Impurity 34 (CAS CATO-C4X-170834)
- Dalilesen Impurity 29 (CAS CATO-C4X-301029)
- Topiramate Impurity 23 (CAS 18549-40-1)
- Salmeterol Impurity 25 (CAS CATO-C4X-105025)
- Ethyl 3-hydrazinyl-4-methylbenzoate hydrochloride (CAS 1185302-10-6)
- N-Aminophthalimide (CAS 1875-48-5)
- 2-(4-Chlorophenyl)-3-oxopropanenitrile (CAS 62538-21-0)
- (4-(3-Fluorobicyclo[1.1.1]Pentan-1-yl)phenyl)methanol (CAS 1934767-33-5)
- Diethyl 2-((p-tolylamino)methylene)malonate (CAS 19056-84-9)
- 2-(4-Fluorophenyl)-5,5-dimethyl-5,6,7,8-tetrahydroimidazo[1,2-a]pyrazine (CAS 1374005-25-0)
- Semaglutide impurity 23 (CAS CATO-C4X-222623)
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