Urapidil Impurity 88 CAS 13379-99-2
| CAS No. | 13379-99-2 |
| Molecular Formula | C10H14ClNO2S |
| Molecular Weight | 247.74 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 247.74 g/mol gives Urapidil Impurity 88 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Urapidil Impurity 88 (CAS 13379-99-2) is a certified pharmaceutical impurity reference standard with the molecular formula C10H14ClNO2S and a molecular weight of 247.74 g/mol.
Urapidil Impurity 88 (C10H14ClNO2S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility, 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).
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 | C10H14ClNO2S |
| Molecular Weight | 247.74 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1960 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Urapidil Standards
- Urapidil Impurity (CAS 20529-23-1)
- Urapidil Impurity 56 (CAS CATO-C4X-192456)
- Urapidil Impurity 29 (CAS 21103-25-3)
- Urapidil Impurity 90 (CAS CATO-C4X-192490)
- Urapidil Impurity 111 (CAS CATO-C4X-1924111)
- Urapidil Impurity 21 (CAS CATO-C4X-192421)
- Urapidil Impurity 93 (CAS 63987-50-8)
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Recommended Standards
- N-tert-Butyl-2-chlorobenzene-1-sulfonamide (CAS 92811-11-5)
- Diethyltin Dichloride (CAS 866-55-7)
- N-Butyl-4-chlorobenzenesulfonamide (CAS 6419-73-4)
- S-((6-chloropyridin-2-yl)methyl) O-ethyl carbonodithioate (CAS 1092444-90-0)
- Salbutamol EP Impurity A(Trifluoroacetic Acid) (CAS CATO-C4X-117649)
- Loxoprofen Impurity 82 (CAS CATO-C4X-148882)
- Thioctic acid Impurity 19 (CAS 91140-37-3)
- 2-bromo-5-[3-(trifluoromethoxy)phenyl]-1,3,4-thiadiazole (CAS 532401-06-2)
- N-butyl-2,5-dihydro-3-Thiophenesulfonamide, 1,1-dioxide (CAS 1384430-18-5)
- 2-[4-(2,4-dichlorophenyl)-4-methyl-2,5-dioxoimidazolidin-1-yl]acetic acid (CAS 1152642-17-5)
- 4-Iodo-3-methyl-1H-indazole (CAS 1360936-09-9)
- 2-Hydroxy-3-methoxy-6-methylbenzaldehyde (CAS 143261-05-6)
- Methyl 2-[4-(4-methoxyphenyl)phenyl]acetate (CAS 352652-78-9)
- D-Ser39-Tirzepatide (CAS CATO-CPTD788679)
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