Mycophenolic Acid Impurity 11 CAS 38877-93-9
| CAS No. | 38877-93-9 |
| Molecular Formula | C18H22O6 |
| Molecular Weight | 334.36 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Mycophenolic Acid Impurity 11.
Mycophenolic Acid Impurity 11 (CAS 38877-93-9) is a certified pharmaceutical impurity reference standard with the molecular formula C18H22O6 and a molecular weight of 334.36 g/mol.
Mycophenolic Acid Impurity 11 (C18H22O6) contains a flavonoid core, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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 | C18H22O6 |
| Molecular Weight | 334.36 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.) | 1968 |
Related Mycophenolic Standards
- Mycophenolic Acid-13C-d3 (CAS CATO-C4X-21226)
- Mycophenolic Acid-d3 (CAS 2033106-92-0)
- Mycophenolic Acid-d3 (CAS 1185242-90-3)
- Mycophenolic acid (CAS 24280-93-1)
- Mycophenolic Acid O-Methyl Methyl Ester (CAS 60435-90-7)
- Mycophenolic Acid Impurity 8 (CAS 31858-65-8)
- Mycophenolic Acid Impurity N3 (CAS 40336-80-9)
- Mycophenolic Acid Impurity 9 (CAS CATO-C4X-21229)
Recommended Standards
- Mycophenolate Mofetil EP Impurity E (CAS 31858-66-9)
- Phloroglucinol impurity 46 (CAS CATO-C4X-221746)
- Flurbiprofen Axetil-13C-d3 (CAS 91503-79-6 (non-labelled))
- Phloroglucinol impurity 61 (CAS 14262-07-8)
- Phenylephrine EP Impurity D (CAS 1367567-95-0)
- Salbutamol Impurity 140 (CAS CATO-C4X-1176140)
- Ceftazidime Impurity C68 (CAS 179258-52-7)
- 1H-Cyclopenta[b]imidazo[4,5-g]indole (CAS 105790-42-9)
- (9H-fluoren-9-yl)methyl (5-aminopentyl)carbamate hydrochloride (CAS 177333-17-4)
- Methyl 2-(5-chloro-3-(trifluoromethyl)pyridin-2-yl)acetate (CAS 1807043-11-3)
- Mycro 3 (CAS 944547-46-0)
- 2-Bromo-4-chloro-6-fluoro-3-iodotoluene (CAS 1365988-37-9)
- Methyl 4-Bromo-3-chlorobenzoate (CAS 117738-74-6)
- C-Type Natriuretic Peptide (32-53) (human, porcine, rat) (CAS 127869-51-6)
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