CAS 139965-11-0: S-FEXOFENADINE

Description: S-Fexofenadine, with the CAS number 139965-11-0, is an antihistamine primarily used to alleviate allergy symptoms such as sneezing, runny nose, and itchy eyes. It is a chiral compound, meaning it exists in two enantiomeric forms, with S-fexofenadine being the active form that exhibits higher potency and efficacy. This substance works by selectively antagonizing peripheral H1 histamine receptors, thereby blocking the action of histamine, a chemical responsible for allergic reactions. S-Fexofenadine is known for its low sedative effects compared to first-generation antihistamines, making it suitable for daytime use. It is typically administered orally and has a favorable pharmacokinetic profile, including rapid absorption and a relatively long half-life, allowing for once-daily dosing. Additionally, it is generally well-tolerated, with a low incidence of side effects, which contributes to its popularity in managing allergic conditions. As with any medication, it is essential to use S-fexofenadine under the guidance of a healthcare professional to ensure safety and effectiveness.

Formula: C₃₂H₃₉NO₄

Synonyms:

• S-Carboxyterfenadine,S-Terfenadinecarboxylate
• Benzeneacetic acid, 4-[(1S)-1-hydroxy-4-[4-(hydroxydiphenylmethyl)-1-piperidinyl]butyl]-α,α-dimethyl-
• Benzeneacetic acid, 4-[1-hydroxy-4-[4-(hydroxydiphenylmethyl)-1-piperidinyl]butyl]-α,α-dimethyl-, (S)-

(S)-Fexofenadine

CAS: 139965-11-0

Fexofenadine is an antihistamine that has been shown to be effective in the treatment of …

• Formula: C₃₂H₃₉NO₄
• Purity: Min. 95%
• Molecular weight: 501.66 g/mol