Fluorometholone Impurity B CAS 83873-16-9
Purity 97%+In StockPharmacopoeial Impurity Standards
| CAS No. | 83873-16-9 |
| Molecular Formula | C22H28O4 |
| Molecular Weight | 356.46 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Fluorometholone Impurity B (CAS 83873-16-9) is a high-purity pharmacopoeial impurity standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C22H28O4. Molecular weight: 356.46 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C22H28O4 |
| Molecular Weight | 356.46 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 chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1980 |
Related Fluorometholone Standards
- Fluorometholone Impurity 4 (CAS 110664-42-1)
- Fluorometholone D Homo Derivative (CAS CATO-C4X-19339)
- Fluorometholone (CAS 426-13-1)
- Fluorometholone Impurity 5 (CAS 378-36-9)
- Fluorometholone Acetate 6,9(11)-diene Impurity (CAS 95955-20-7)
- Fluorometholone Impurity 2 (CAS 130145-14-1)
- Fluorometholone Impurity 10 (CAS 30934-01-1)
- Fluorometholone Impurity N12 (CAS 382-52-5)
Recommended Standards
- Methylprednisolone impurity 6 (CAS CATO-C4X-191986)
- Orforglipron Impurity 41 (CAS CATO-C4X-323441)
- Methylprednisolone Impurity 79 (CAS CATO-C4X-191979)
- Ibuprofen Impurity 83 (CAS 64622-21-5)
- Barloxavir impurity C718 (CAS 1370250-38-6)
- (3AR,4s,9bs)-6,9-dimethyl-3a,4,5,9b-tetrahydro-3h-cyclopenta[c]quinoline-4-carboxylic acid (CAS 1415811-56-1)
- N-Nitroso Dobutamine (CAS CATO-C4X-129838)
- Ethyl 5-(3-fluorophenyl)-5-oxovalerate (CAS 898752-10-8)
- 1-(((Cyclopropylmethyl)amino)methyl)cyclopentan-1-ol (CAS 1493560-60-3)
- (D-Ala2)-Gastric Inhibitory Polypeptide (human) trifluoroacetate salt (CAS 444073-04-5)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 13829788188 / jacky.chen@cato-chem.com