Cetirizine
西替利嗪
Also known as: 2-[2-[4-[(4-Chlorophenyl)phenylmethyl]-1-piperazinyl]ethoxy]acetic acid, (2-{4-[(4-Chlorophenyl)(phenyl)methyl]-1-piperazinyl}ethoxy)acetic acid, (±)-[2-[4-(p-Chloro-α-phenylbenzyl)-1-piperazinyl]ethoxy]acetic acid, Reactine, Zyrtec, Zirtek
Cetirizine (CAS 83881-51-0) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C21H25ClN2O3 and a molecular weight of 388.888 g/mol. It is also known as 2-[2-[4-[(4-Chlorophenyl)phenylmethyl]-1-piperazinyl]ethoxy]acetic acid, (2-{4-[(4-Chlorophenyl)(phenyl)methyl]-1-piperazinyl}ethoxy)acetic acid and (±)-[2-[4-(p-Chloro-α-phenylbenzyl)-1-piperazinyl]ethoxy]acetic acid. Key properties include a melting point of 110-115°C, a boiling point of 542.1±45.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 281.6±28.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 83881-51-0
- Jingsj CID
- J-18941-3
- Molecular Formula
- C21H25ClN2O3
- Chinese Name
- 西替利嗪
- Molecular Weight
- 388.888 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 110-115°C |
|---|---|
| Boiling Point | 542.1±45.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 281.6±28.7 °C |
Frequently Asked Questions
What is the CAS number of Cetirizine?
The CAS number of Cetirizine is 83881-51-0.
What are the molecular formula and molecular weight of Cetirizine?
Cetirizine has molecular formula C21H25ClN2O3 and molecular weight 388.888 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Cetirizine (CAS 83881-51-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-18941-3 (accessed 2026-10-22).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.