Opicapone impurity 37 CAS CATO-C4X-240437
| CAS No. | CATO-C4X-240437 |
| Molecular Formula | C8H9Cl2N3O |
| Molecular Weight | 234.08 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Opicapone impurity 37 (CAS CATO-C4X-240437) is a certified pharmaceutical impurity reference standard with the molecular formula C8H9Cl2N3O and a molecular weight of 234.08 g/mol.
Opicapone impurity 37 (C8H9Cl2N3O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point; 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 | C8H9Cl2N3O |
| Molecular Weight | 234.08 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Opicapone Standards
- Opicapone Impurity 02 (CAS 923288-59-9)
- Opicapone impurity 38 (CAS CATO-C4X-240438)
- Opicapone impurity 68 (CAS CATO-C4X-240468)
- Opicapone Impurity 8 (CAS CATO-C4X-24048)
- Opicapone impurity 35 (CAS 1443319-15-0)
- Opicapone impurity 27 (CAS CATO-C4X-240427)
- Opicapone impurity 12 (CAS CATO-C4X-240412)
- Opicapone impurity 71 (CAS CATO-C4X-240471)
Recommended Standards
- Bosutinib Impurity 28 (CAS 65182-98-1)
- Clopidogrel Impurity 75 (CAS 1217999-35-3)
- Clopidogrel Impurity 74 (CAS 1008008-56-7)
- Dichlormate (CAS 1966-58-1)
- Erlotinib Impurity 14 (CAS CATO-C4X-106914)
- Lifitegrast Impurity 61 (CAS CATO-C4X-240961)
- Pomalidomide Impurity 31 (CAS 610-27-5)
- N-(4-Hydroxybenzo[d]thiazol-2-yl)acetamide (CAS 20600-52-6)
- tert-Butyl 6,6-dimethyl-4-oxo-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-4,6-dihydro-5H-thieno[2,3-c]pyrrole-5-carboxylate (CAS 1951483-79-6)
- (R)-1-(3-bromophenyl)-2-methylpropan-1-amine (CAS 1212173-09-5)
- Methyl 2-((4-acetamidophenyl)thio)acetate (CAS 899016-18-3)
- H-Met-Asp-OH (CAS 14595-65-4)
- 1-(3-Butoxyphenyl)-2,2,2-trifluoroethan-1-one (CAS 1443343-46-1)
- Acetyl-Tau Peptide (273-284) amide trifluoroacetate salt (CAS 1684399-52-7)
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