Chlorophyll Impurity 3 CAS 25465-77-4
| CAS No. | 25465-77-4 |
| Molecular Formula | C33H32N4O5 |
| Molecular Weight | 564.63 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO supplies Chlorophyll Impurity 3 (CAS 25465-77-4), a certified reference material (molecular formula C33H32N4O5, MW 564.63 g/mol) for analytical method development and quality control.
Based on its molecular formula C33H32N4O5, Chlorophyll Impurity 3 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 564.63 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 | C33H32N4O5 |
| Molecular Weight | 564.63 g/mol |
| Appearance | Pale yellow to 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) | 20.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1964 |
| Nitrogen Atoms | 4 |
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- Nintedanib Impurity 18 (CAS CATO-C4X-181418)
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- 3-Methyl-4-(trifluoromethyl)piperidin-4-ol hydrochloride (CAS 1951439-16-9)
- 4-Hydroxyphenyl butyrate (CAS 83405-92-9)
- Methyl (2E)-2-(3-chlorobenzenesulfonyl)-3-[(3,4-difluorophenyl)amino]prop-2-enoate (CAS 1327196-64-4)
- N-Fmoc-2-iodo-D-phenylalanine (CAS 478183-65-2)
- 2-Chloro-4-ethylaniline (CAS 90006-41-0)
- (2R)-3-(Allylsulfinyl)-2-aminopropanoic acid (CAS 17795-26-5)
- Ethyl 8-oxo-8-(3-(trifluoromethyl)phenyl)octanoate (CAS 898777-79-2)
- 4-Chloro-2-(difluoromethyl)-6-methoxy-3-methylpyridine (CAS 1804495-17-7)
- Semaglutide Impurity 145 (CAS CATO-C4X-2226145)
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