Buspirone impurity 28 CAS CATO-C4X-125828
| CAS No. | CATO-C4X-125828 |
| Molecular Formula | C21H29N5O4 |
| Molecular Weight | 415.49 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Buspirone impurity 28 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
CATO supplies Buspirone impurity 28 (CAS CATO-C4X-125828), a pharmacopoeial impurity reference standard (molecular formula C21H29N5O4, MW 415.49 g/mol) used for the identification and quantification of trace impurities in APIs.
Buspirone impurity 28 (C21H29N5O4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; 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.
Physical & Chemical Properties
| Molecular Formula | C21H29N5O4 |
| Molecular Weight | 415.49 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| 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 |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 5 |
Related Buspirone Standards
- Buspirone EP Impurity E (CAS 257877-43-3)
- Buspirone impurity 01 (CAS 105496-33-1)
- Buspirone N-Oxide (CAS 220747-81-9)
- Buspirone impurity 38 (CAS CATO-C4X-125838)
- Buspirone impurity 30 (CAS CATO-C4X-125830)
- Buspirone-d8 Hydrochloride (CAS 204395-49-3)
- Buspirone EP Impurity N (CAS 257877-44-4)
- Buspirone (CAS 36505-84-7)
Recommended Standards
- N-(N-L-Phenylalanyl-L-histidyl)-L-leucine (CAS 28607-51-4)
- 5-(4-(Bis(4-methoxyphenyl)amino)phenyl)thiophene-2-carbaldehyde (CAS 1343425-46-6)
- N-(1-acetyl-3,3-dimethylindolin-6-yl)-2-((pyridin-4-ylmethyl)amino)nicotinamide (CAS 453562-74-8)
- 4-(4-(5,5-Dimethyl-4,5-dihydrothiazol-2-yl)piperazin-1-yl)-6-(2,2,2-trifluoroethyl)thieno[2,3-d]pyrimidine (CAS 1454920-20-7)
- Diazepam EP Impurity B (CAS 6021-21-2)
- Pregabalin Impurity 116 (CAS 1101167-84-3（free base）)
- Ixazomib Impurity 61 (CAS CATO-C4X-126761)
- 5,5,6,6,7,7,8,8,8-Nonafluoro-3-iodooctan-1-ol (CAS 109574-81-4)
- rel-(3R,4S)-3-Methyl-1-(methylsulfonyl)piperidin-4-amine (CAS 1228449-78-2)
- (6S)-4-Methoxybenzyl 3-(chloromethyl)-8-oxo-7-(2-phenylacetamido)-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate (CAS 1214081-14-7)
- 1-Cbz-3-piperidinecarboxylic Acid (CAS 78190-11-1)
- Tetra-n-butylammonium iodotetrachloride (CAS 15625-59-9)
- tert-Butyl (2-methoxy-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzyl)carbamate (CAS 2641808-44-6)
- Calcium-Like Peptide 3 (CAS 261969-05-5)
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