SB 431542 CAS 301836-41-9
| CAS No. | 301836-41-9 |
| Molecular Formula | C22H16N4O3 |
| Molecular Weight | 384.39 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
SB 431542 (CAS 301836-41-9), molecular formula C22H16N4O3 and molecular weight 384.39 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, SB 431542 (C22H16N4O3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 17.0, corresponding to approximately 17 ring(s) or double-bond equivalent(s). With a molecular weight of 384.39 g/mol, it falls into the moderately-high-molecular-weight range. 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 analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C22H16N4O3 |
| Molecular Weight | 384.39 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°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) | 17.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 4 |
Recommended Standards
- N-(3-((8-Cyano-4-(phenylamino)pyrazolo[1,5-a][1,3,5]triazin-2-yl)amino)phenyl)acetamide (CAS 948575-39-1)
- tert-Butyldimethyl((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)naphthalen-1-yl)oxy)silane (CAS 2813233-17-7)
- N-(1-(1H-Benzo[d]imidazol-2-yl)-2-(4-nitrophenyl)vinyl)benzamide (CAS 88820-23-9)
- tert-Butyldimethyl((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)naphthalen-2-yl)oxy)silane (CAS 2411790-91-3)
- N-Benzyl-2-(2,6-dimethylphenoxy)acetamide (CAS 302574-65-8)
- (R)-1-(5-Chloro-2-(2-(4-(4-fluorobenzyl)-2-methylpiperazin-1-yl)-2-oxoethoxy)phenyl)urea hydrochloride (CAS 288262-96-4)
- Glycerol monomercaptoacetate (CAS 30618-84-9)
- Plerixafor (CAS 110078-46-1)
- 1-Piperidinepropanoyl chloride (CAS 54872-83-2)
- (3,5-Bis((3,5-dimethoxybenzyl)oxy)phenyl)methanol (CAS 176650-92-3)
- 2-Amino-4-chloro-N-ethyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzamide (CAS 2415255-63-7)
- 3-Methyl-5H,6H,7H-pyrrolo[1,2-a]imidazol-7-ol (CAS 1936181-10-0)
- Benzyl cyclopropyl(1-(2-hydroxyethyl)pyrrolidin-3-yl)carbamate (CAS 1353976-41-6)
- Semaglutide Impurity 186 (CAS CATO-C4X-2226186)
Why CATO?
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