Cinitapride Impurity 36 CAS 907969-40-8
| CAS No. | 907969-40-8 |
| Molecular Formula | C21H38N4O5 |
| Molecular Weight | 426.55 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.
Cinitapride Impurity 36 (CAS 907969-40-8) is a certified pharmaceutical impurity reference standard with the molecular formula C21H38N4O5 and a molecular weight of 426.55 g/mol.
Based on its molecular formula C21H38N4O5, Cinitapride Impurity 36 contains a steroid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 426.55 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C21H38N4O5 |
| Molecular Weight | 426.55 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 4 |
Related Cinitapride Standards
- Cinitapride Impurity 20 (CAS CATO-C4X-290820)
- Cinitapride Impurity 21 (CAS CATO-C4X-290821)
- Cinitapride Impurity 12 (CAS CATO-C4X-290812)
- Cinitapride Impurity 22 (CAS CATO-C4X-290822)
- Cinitapride impurity 4 (CAS 1361312-48-2)
- Cinitapride Impurity 29 (CAS 1884298-43-4)
- Cinitapride Impurity 17 (CAS CATO-C4X-290817)
- Cinitapride Impurity 28 (CAS CATO-C4X-290828)
Recommended Standards
- Beraprost Impurity 6 (Mixture of Diastereomers) (CAS CATO-C4X-21846)
- Oxatomide (CAS 60607-34-3)
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- Leupeptin (Synthetic) (CAS 24365-47-7)
- Midazolam EP Impurity E DiMaleate Salt (CAS 59469-29-3)
- Doxazosin EP Impurity B (CAS 70918-74-0)
- Montelukast Impurity 29 (CAS 184764-13-4)
- (4-((2-(Hydroxymethyl)phenyl)dimethylsilyl)phenyl)(morpholino)methanone (CAS 1244855-81-9)
- Belumosudil Impurity 41 (CAS CATO-C4X-298841)
- Buta-1,3-diene-2,3-diyldibenzene (CAS 2548-47-2)
- 2,3-dioxo-1,2,3,4-tetrahydroquinoxaline-6-carboxylic acid (CAS 14121-55-2)
- [1-(2-phenylethyl)pyrrolidin-3-yl]methanol (CAS 2148-52-9)
- 1-(1-Ethyl-3-methyl-1H-pyrazol-4-yl)-N-((1-ethyl-5-fluoro-3-methyl-1H-pyrazol-4-yl)methyl)methanamine hydrochloride (CAS 1856039-29-6)
- [β-Asp]9-Semaglutide (CAS CATO-CPTD788605)
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