Tetramethylrhodamine-5-maleimide CAS 174568-67-3
| CAS No. | 174568-67-3 |
| Molecular Formula | C28H23N3O5 |
| Molecular Weight | 481.50 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 481.50 g/mol gives Tetramethylrhodamine-5-maleimide distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Tetramethylrhodamine-5-maleimide (CAS 174568-67-3), a certified reference material (molecular formula C28H23N3O5, MW 481.50 g/mol) for analytical method development and quality control.
Based on its molecular formula C28H23N3O5, Tetramethylrhodamine-5-maleimide 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 481.50 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C28H23N3O5 |
| Molecular Weight | 481.50 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) | 19.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2006 |
| Nitrogen Atoms | 3 |
Related Tetramethylrhodamine Standards
- Tetramethylrhodamine-6-maleimide, single isomer (CAS 174568-68-4)
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- 2-(6-Tetramethylrhodamine)carboxylic Acid N-Hydroxysuccinimide Ester (CAS 1027512-41-9)
- Tetramethylrhodamine-4-iodoacetamide (CAS 114458-99-0)
- Tetramethylrhodamine methyl ester perchlorate (CAS 115532-50-8)
- Tetramethylrhodamine ethyl ester perchlorate (CAS 115532-52-0)
- 2-[(5(6)-Tetramethylrhodamine]carboxylic Acid N-Hydroxysuccinimide Ester (CAS 122363-35-3)
- 62669-72-1 Tetramethylrhodamine Xanthylium, 9-(2-carboxyphenyl)-3,6-bis(dimethylamino)-, perchlorate (1:1) Xanthylium, 9-(2-carboxyphenyl)-3,6-bis(dimethylamino)-, perchlorate (CAS 62669-72-1)
Recommended Standards
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- 4-(2-Bromo-5-methylphenyl)-5-iodothiazol-2-amine (CAS 2416962-75-7)
- (R)-5,6-DIMETHOXY-2,3-DIHYDRO-1H-INDEN-1-AMINE (CAS 1260590-97-3)
- 4,6-difluoro-1,2-dimethyl-1H-1,3-benzodiazole (CAS 1370281-39-2)
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- 4-(Ethylthio)-N-(4-(pyridin-2-yl)thiazol-2-yl)benzamide (CAS 896365-56-3)
- (4-(Pyridin-4-yloxy)phenyl)boronic acid (CAS 1029438-35-4)
- Insulin Degludec Impurity 10 (CAS CATO-C4X-215710)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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