Fluconazole Impurity 76 Dimesylate CAS CATO-C4X-101976
| CAS No. | CATO-C4X-101976 |
| Molecular Formula | C21H16F4N6O2 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Fluconazole Impurity 76 Dimesylate (C21H16F4N6O2CH4O3S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 14.0, corresponding to approximately 14 ring(s) or double-bond equivalent(s). With a molecular weight of 556.49 g/mol, it falls into the moderately-high-molecular-weight range. 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).
CATO supplies Fluconazole Impurity 76 Dimesylate (CAS CATO-C4X-101976), a pharmacopoeial impurity reference standard (molecular formula C21H16F4N6O2CH4O3S, MW 556.49 g/mol) used for the identification and quantification of trace impurities in APIs.
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 | C21H16F4N6O2 2*CH4O3S |
| Molecular Weight | 556.49 g/mol |
| Purity | ≥95% |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 6 |
| Sulfur Atoms | 1 |
Related Fluconazole Standards
- Fluconazole-d4 (CAS 1124197-58-5)
- Fluconazole EP Impurity F (CAS 118689-07-9)
- Fluconazole Impurity 48 (CAS 1222655-38-0)
- Fluconazole Impurity 58 (CAS 123091-15-6 (free base))
- Fluconazole Impurity 19 (CAS 1348664-75-4)
- Fluconazole β-D-glucuronide (CAS 136134-23-1)
- Fluconazole EP Impurity I Bromide (CAS 150168-54-0)
- Fluconazole EP Impurity H (CAS 150194-52-8)
Recommended Standards
- Levothyroxine Impurity 15 (CAS CATO-C4X-167815)
- Polymyxin Impurity 36 TFA (CAS CATO-C4X-225536)
- Pitavastatin Impurity 63 (CAS CATO-C4X-103763)
- 8-Methyl-3-phenyl-1,4-diazaspiro[4.5]Dec-3-ene-2-thione (CAS 899925-95-2)
- Isobutanol D8 (CAS 1261396-42-2)
- 4-(Pentafluorothio)benzaldehyde (CAS 401892-84-0)
- N-Methoxy-N,3,5-trimethylisoxazole-4-carboxamide (CAS 1223452-45-6)
- rel-(7S,8S)-2-Amino-7,8-dimethyl-7,8-dihydro-5H-pyrano[4,3-b]pyridin-5-one (CAS 2673369-68-9)
- 3-tert-butyl-1-iodoimidazo[1,5-a]pyrazin-8-amine (CAS 1320267-01-3)
- Tirzepatide Impurity 38 (CAS CATO-C4X-324038)
Why CATO?
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