Micafungin FR-179642 Impurity (Acid) CAS 168110-44-9
| CAS No. | 168110-44-9 |
| Molecular Formula | C35H52N8O20S |
| Molecular Weight | 936.89 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Micafungin FR-179642 Impurity (Acid) (CAS 168110-44-9) is a certified pharmaceutical impurity reference standard with the molecular formula C35H52N8O20S and a molecular weight of 936.89 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Micafungin FR-179642 Impurity (Acid) is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 936.89 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 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 | C35H52N8O20S |
| Molecular Weight | 936.89 g/mol |
| 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2005 |
| Nitrogen Atoms | 8 |
| Sulfur Atoms | 1 |
Related Micafungin Standards
- Micafungin Impurity 25 (CAS CATO-C4X-169525)
- Micafungin Impurity 9 (CAS CATO-C4X-16959)
- Micafungin Impurity 27 (CAS CATO-C4X-169527)
- Micafungin Impurity 26 (CAS CATO-C4X-169526)
- Micafungin Impurity 10 (CAS CATO-C4X-169510)
- Micafungin Impurity 3 (CAS CATO-C4X-16953)
- Micafungin WF11899A Impurity (CAS 160335-87-5)
- Micafungin Intermediate FR901379 (CAS 144371-88-0)
Recommended Standards
- Neoagarohexaose, 98% (CAS 25023-93-2)
- Brilacidin (CAS 1224095-98-0)
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- Bilirubin Diglucuronide (CAS 17459-92-6)
- Olmesartan Impurity 97 (CAS 2190488-06-1)
- Aprepitant Impurity 44 (CAS CATO-C4X-114144)
- Mirabegron Impurity 43 (CAS 1627515-83-6)
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- Ethyl 2-(3-(benzyloxycarbonylamino)-4-bromobutanamido)acetate (CAS 959246-79-8)
- Daprodustat Impurity 11 (CAS 7150-63-2)
- 2-Chloro-N-[5-(dimethylamino)-2-nitrophenyl]-5-nitrobenzamide (CAS 1079264-82-6)
- 4-Chloro-1-(3-chlorobenzyl)-1h-pyrazol-3-amine (CAS 1341733-48-9)
- Endo-Ala35-Tirzepatide (CAS CATO-CPTD788687)
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