Inosine impurity 4 CAS 126222-04-6
| CAS No. | 126222-04-6 |
| Molecular Formula | C10H14N4O6 |
| Molecular Weight | 286.24 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Inosine impurity 4 (CAS 126222-04-6) is a certified pharmaceutical impurity reference standard with the molecular formula C10H14N4O6 and a molecular weight of 286.24 g/mol.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, Inosine impurity 4 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 286.24 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C10H14N4O6 |
| Molecular Weight | 286.24 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| 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 |
| CAS Registry Year (est.) | 1993 |
| Nitrogen Atoms | 4 |
Related Inosine Standards
Recommended Standards
- Balsalazide impurity 8 (CAS 1242567-07-2)
- Benzaldehyd-2,4-dinitrophenylhydrazone (CAS 1157-84-2)
- Benserazide impurity 39 (CAS CATO-C4X-142739)
- Kaempferol (CAS 520-18-3)
- delafloxacin Impurity 3 (CAS CATO-C4X-26373)
- Pregabalin N-Methyl Impurity (CAS 1155843-61-0)
- Valsartan Impurity 12 (CAS 6306-52-1)
- 1-(4-(Trifluoromethoxy)phenyl)-1H-pyrrole-2,5-dione (CAS 68255-58-3)
- 1-(4-(Tert-butyl)phenyl)-3-(2,6-dichlorobenzyl)-2-methylpyridin-4(1H)-one (CAS 339017-30-0)
- N-(2-hydroxyethyl)-2,4,6-triiodo-3-(N-methylacetamido)-5-((2S,3S,4R,5R)-2,3,4,5,6-pentahydroxyhexanamido)benzamide (CAS 56562-79-9)
- Methyl trans-4-Aminocyclohexanecarboxylate (CAS 62456-15-9)
- N,3-dimethyl-1H-indole-2-carboxamide (CAS 203710-97-8)
- Ethyl 3-bromo-4-methylbenzoate (CAS 147962-81-0)
- Semaglutide Impurity 187 (CAS CATO-C4X-2226187)
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