Riluzole Impurity 29 CAS 957791-08-1
| CAS No. | 957791-08-1 |
| Molecular Formula | C7H4F3NO2 |
| Molecular Weight | 191.11 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Riluzole Impurity 29 (C7H4F3NO2) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies Riluzole Impurity 29 (CAS 957791-08-1), a pharmacopoeial impurity reference standard (molecular formula C7H4F3NO2, MW 191.11 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 | C7H4F3NO2 |
| Molecular Weight | 191.11 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 methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
Related Riluzole Standards
- Riluzole Impurity 28 (CAS 861204-44-6)
- Riluzole USP Related Compound A (CAS 461-82-5)
- Riluzole impurity 19 (CAS 2995-45-1)
- Riluzole impurity 20 (CAS 1644-88-8)
- Riluzole Impurity 9 (CAS 1736-72-7)
- Riluzole Impurity 13 (CAS 1133115-28-2)
- Riluzole Impurity 2 (CAS 752969-85-0)
- Riluzole Impurity 5 (CAS 235101-36-7)
Recommended Standards
- 89-92-9 3NDQ4L309U o-Xylyl bromide Benzene, 1-(bromomethyl)-2-methyl- (9CI) alpha-Bromo-o-xylene o-Xylene, alpha-bromo- (8CI) Benzene, 1-(bromomethyl)-2-methyl- 1-(Bromomethyl)-2-methylbenzene 2-(Bromomethyl)toluene alpha-Bromo-ortho-xylene EINECS 201-951-6 HSDB 2192 o-Methylbenzyl bromide 2-Methylbenzyl bromide NSC 60145 o-Xylene, alpha-bromo- 2-Xylyl bromide UNII-3NDQ4L309U (CAS 89-92-9)
- Apalutamide Impurity 49 (CAS CATO-C4X-274949)
- 585-71-7 IG89OQ6Y85 (1-Bromoethyl)benzene Benzene, (1-bromoethyl)- 1-Bromo-1-phenylethane alpha-Methylbenzyl bromide (alpha-Bromoethyl)benzene CCRIS 1779 EINECS 209-560-2 HSDB 2736 NSC 8052 alpha-Phenethyl bromide 1-Phenethyl bromide 1-Phenyl-1-bromoethane alpha-Phenylethyl bromide 1-Phenylethyl bromide UNII-IG89OQ6Y85 (CAS 585-71-7)
- 5-(Trifluoromethyl)-2-pyridinecarboxylic Acid (CAS 80194-69-0)
- Fulvestrant Impurity 11 (CAS 757-06-2)
- Acipimox Impurity 2 (CAS 98502-96-6)
- Fospropofol Impurity 9 Na Salt (CAS 250345-81-4)
- [4-(2,5-dimethyl-1h-pyrrol-1-yl)phenyl]methanamine (CAS 1182799-61-6)
- 1393528-26-1 6-aminospiro[chromane-2,1'-cyclobutan]-4-one (CAS 1393528-26-1)
- 5-Fluoro-2-methylbenzo[d]thiazol-6-amine (CAS 1610021-29-8)
- 3-(Carbamoylamino)benzoic acid (CAS 20632-43-3)
- 2-(5-Amino-2-chlorophenyl)acetonitrile (CAS 850451-72-8)
- 5-(Benzyloxy)-2,4-dihydro-1,4-benzoxazin-3-one (CAS 888731-88-2)
- Polymyxin B nonapeptide (CAS 86408-36-8)
Why CATO?
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