Gadodiamide Impurity 8 CAS CATO-C4X-31438
| CAS No. | CATO-C4X-31438 |
| Molecular Formula | C12H17Li4N3O8 |
| Molecular Weight | 359.04 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
CATO supplies Gadodiamide Impurity 8 (CAS CATO-C4X-31438), a pharmacopoeial impurity reference standard (molecular formula C12H17Li4N3O8, MW 359.04 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C12H17Li4N3O8, Gadodiamide Impurity 8 contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 359.04 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 | C12H17Li4N3O8 |
| Molecular Weight | 359.04 g/mol |
| Appearance | Off-white to pale 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 3 |
Related Gadodiamide Standards
- Gadodiamide Impurity 3 (CAS CATO-C4X-31433)
- Gadodiamide Impurity 7 (CAS CATO-C4X-31437)
- Gadodiamide Impurity 5 (CAS CATO-C4X-31435)
- Gadodiamide Impurity 1 (CAS 137076-43-8)
- Gadodiamide Impurity 9 (CAS CATO-C4X-31439)
- Gadodiamide Impurity 11 (CAS CATO-C4X-314311)
- Gadodiamide Impurity 2 (CAS CATO-C4X-31432)
- Gadodiamide Impurity 4 (CAS CATO-C4X-31434)
Recommended Standards
- 91991-76-3 4-Chloro-2-(trichloromethyl)-8-(trifluoromethyl)quinoline DTXSID70575957 (CAS 91991-76-3)
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- 5-Iodo-2-(2,2,2-trifluoroacetamido)benzoic acid (CAS 445479-81-2)
- 5-Bromo-2-ethyl-3-iodo-1H-pyrrolo[2,3-b]pyridine (CAS 1228666-12-3)
- Remdesivir Impurity 46 (CAS CATO-C4X-210046)
- Propofol EP Impurity A (CAS 2934-05-6)
- Milnacipran Impurity 13 (CAS 19532-98-0)
- 2-Chloro-N-[4-chloro-3-(morpholine-4-sulfonyl)phenyl]acetamide (CAS 379254-82-7)
- 3-(Methylsulphonylamino)phenylacetic Acid (CAS 407640-21-5)
- 1-((2-Methyl-1H-indol-4-yl)oxy)-3-(pyrrolidin-1-yl)propan-2-ol (CAS 338392-06-6)
- 3-(3,5-dichlorophenyl)-1H-1,2,4-triazole-5-thiol (CAS 261511-12-0)
- 1-(4-Phenylbut-3-en-1-yl)piperidin-4-ol (CAS 1353990-97-2)
- (S)-2-((tert-Butoxycarbonyl)amino)-4-(3-methoxyphenyl)butanoic acid (CAS 942065-44-3)
- Tirzepatide Impurity 15 (CAS CATO-C4X-324015)
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