TL;DR: Phenylbutazone (CAS 50-33-9) is a chemical compound with molecular formula C19H20N2O2 and molecular weight 308.15247 g/mol, supplied by CoreyChem (Career Henan Chemical Co., Ltd.) with ISO-certified quality and global shipping.
4-butyl-1,2-diphenylpyrazolidine-3,5-dione
Also Known As: phenylbutazone, Butapirazol, Butazolidin, Butadion, Flexazone
Top 5 of 22 IPC patent classification(s) from the SureChEMBL global patent database.
| Molecular Formula | C19H20N2O2 |
| Molecular Weight | 308.15247 g/mol |
| XLogP | 3.2 |
| Topological Polar Surface Area (TPSA) | 40.6 Ų |
| Hydrogen Bond Donors | 0 |
| Hydrogen Bond Acceptors | 2 |
| Rotatable Bonds | 5 |
| Exact Mass | 308.15247 Da |
| Heavy Atoms | 23 |
| Complexity | 389.0 |
| Melting Point | 219 to 225 °F (NTP, 1992) |
| Refractive Index | INDICES OF REFRACTION: 1.600 (ALPHA), 1.620 (GAMMA) |
| Solubility | less than 1 mg/mL at 74.3 °F (NTP, 1992) |
| SMILES | CCCCC1C(=O)N(N(C1=O)C2=CC=CC=C2)C3=CC=CC=C3 |
| InChIKey | VYMDGNCVAMGZFE-UHFFFAOYSA-N |
Applications: Phenylbutazone is used in pharmaceutical synthesis routes and API production, as well as heterocycle construction in medicinal chemistry and agrochemical discovery. It commonly serves as a versatile building block for organic synthesis. Available from CoreyChem as both catalog item and custom-synthesis project (mg to ton scale), with full analytical documentation (COA, MSDS, HPLC, NMR, MS).
Phenylbutazone is a pharmaceutical intermediate identified by CAS number 50-33-9 and the molecular formula C19H20N2O2 and a molecular weight of 308.15 g/mol. Physically, the compound has a solubility: less than 1 mg/mL at 74.3 °F (NTP, 1992). Synonyms include phenylbutazone and Butapirazol.
Custom synthesis and full analytical documentation (COA/MSDS) are available from CoreyChem. Request a quotation with your required quantity and purity for current lead time and pricing.
The XLogP value of 3.2 indicates that Phenylbutazone is lipophilic (fat-soluble), which may influence its absorption, distribution, and formulation strategy. With a topological polar surface area (TPSA) of 40.6 Ų, Phenylbutazone exhibits relatively low polarity, potentially indicating favorable cell membrane permeability. Following Lipinski's Rule of Five, Phenylbutazone has 0 hydrogen bond donor(s) and 2 hydrogen bond acceptor(s), all within the drug-like range, suggesting favorable oral bioavailability potential.
The CAS number of Phenylbutazone is 50-33-9.
The molecular formula of Phenylbutazone is C19H20N2O2.
The molecular weight of Phenylbutazone is 308.15247 g/mol.
Phenylbutazone is used in pharmaceutical synthesis routes and API production, as well as heterocycle construction in medicinal chemistry and agrochemical discovery. It commonly serves as a versatile building block for organic synthesis. Available from CoreyChem as both catalog item and...
You can request a quote for Phenylbutazone directly from CoreyChem. Contact us or email [email protected] for pricing and availability.
Yes, CoreyChem provides custom synthesis services for Phenylbutazone and related compounds. Contact us with your specific requirements including quantity, purity, and timeline.
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