Picosulfate impurity 23 CAS 158839-52-2
| CAS No. | 158839-52-2 |
| Molecular Formula | C12H11NO2 |
| Molecular Weight | 201.22 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Picosulfate impurity 23 (CAS 158839-52-2) is a certified pharmaceutical impurity reference standard with the molecular formula C12H11NO2 and a molecular weight of 201.22 g/mol.
Picosulfate impurity 23 (C12H11NO2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. 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. 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 | C12H11NO2 |
| Molecular Weight | 201.22 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2002 |
| Nitrogen Atoms | 1 |
Related Picosulfate Standards
- Picosulfate impurity 27 (CAS CATO-C4X-123727)
- Picosulfate Impurity N1 (CAS 22945-62-6)
- Picosulfate Impurity 10 (CAS 33077-70-2)
- Picosulfate impurity 18 (CAS 26838-86-8)
- Picosulfate Impurity 8 (CAS 58498-11-6)
- Picosulfate Impurity 14 (CAS 4783-68-0)
- Picosulfate impurity 20 (CAS 181423-88-1)
- Picosulfate Impurity 12 (CAS 105745-58-2)
Recommended Standards
- Paracetamol EP Impurity M (CAS 1752-24-5)
- Captopril Impurity 35 (CAS 613256-52-3)
- Nafamostat Impurity 36 (CAS 765871-54-3)
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- Ponatinib Impurity 41 (CAS CATO-C4X-226941)
- Lemborexant Impurity 36 (CAS CATO-C4X-304236)
- N-Nitroso Risperidone Impurity 47 (CAS CATO-C4X-111147)
- 5-(Pyrrolidin-1-yl)pentan-1-amine hydrochloride (CAS 1956369-09-7)
- 2-Methyl-1-(4-methyl-4h-1,2,4-triazol-3-yl)propan-1-amine (CAS 1016753-32-4)
- Tert-butyl 3-ethoxy-3-(2-hydroxyethyl)azetidine-1-carboxylate (CAS 2306270-29-9)
- 1,1-Bis[(3-fluorophenyl)methyl]hydrazine dihydrochloride (CAS 2097935-41-4)
- N,N-Diethyl-5-methylfuran-3-amine (CAS 539021-18-6)
- 3-(4-Methoxyphenyl)-3-(1-oxoisoindolin-2-yl)propanoic acid (CAS 167886-73-9)
- Semaglutide impurity 28 (CAS CATO-C4X-222628)
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