Mycophenolic Acid Impurity 8 CAS 31858-65-8
| CAS No. | 31858-65-8 |
| Molecular Formula | C16H18O6 |
| Molecular Weight | 306.31 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Mycophenolic Acid Impurity 8 (CAS 31858-65-8), a pharmacopoeial impurity reference standard (molecular formula C16H18O6, MW 306.31 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a flavonoid core, a hydroxyl group, an ether linkage, Mycophenolic Acid Impurity 8 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 306.31 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
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.
Physical & Chemical Properties
| Molecular Formula | C16H18O6 |
| Molecular Weight | 306.31 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |
Related Mycophenolic Standards
- Mycophenolic acid (CAS 24280-93-1)
- Mycophenolic Acid-d3 (CAS 2033106-92-0)
- Mycophenolic Acid-d3 (CAS 1185242-90-3)
- Mycophenolic Acid-13C-d3 (CAS CATO-C4X-21226)
- Mycophenolic Acid Impurity 11 (CAS 38877-93-9)
- Mycophenolic Acid O-Methyl Methyl Ester (CAS 60435-90-7)
- Mycophenolic Acid Impurity N3 (CAS 40336-80-9)
- Mycophenolic Acid Impurity 9 (CAS CATO-C4X-21229)
Recommended Standards
- Lenalidomide Impurity 10 (CAS CATO-C4X-190310)
- Roxadustat Impurity 136 (CAS CATO-C4X-2213136)
- 3-[(2-Ethoxy-3,4-dioxocyclobutyl)amino]-2-hydroxy-N,N-dimethylbenzamide 919349-40-9 (CAS 919349-40-9)
- Cimifugin (CAS 37921-38-3)
- Perampanel Impurity 7 (CAS CATO-C4X-24307)
- Cefovecin Impurity 5 (CAS CATO-C4X-30355)
- Sulpiride EP Impurity E (CAS 52395-25-2)
- 3-Fluoro-6-(trifluoromethyl)pyridin-2-amine (CAS 1214330-82-1)
- 2,4-Dichloro-5-methoxy-8-methylquinoline (CAS 1823874-43-6)
- 7-Chloro-3-ethyl-2-hydrazinylquinoline hydrochloride (CAS 1171088-98-4)
- 2-Morpholino-2-(p-tolyl)acetonitrile hydrochloride (CAS 1208081-66-6)
- 3,5-Di(pyridin-4-yl)benzaldehyde (CAS 955363-38-9)
- Nickel(II) bromide hexahydrate (CAS 18721-96-5)
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