Piperacillin

哌拉西林

Also known as: Piperacillin hydrate, Piperacillin monohydrate, (2S,5R,6R)-6-[[(2R)-[[(4-ethyl-2,3-dioxo-1-piperazinyl)carbonyl]amino]phenylacetyl]amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid

Piperacillin (CAS 66258-76-2) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C23H29N5O8S and a molecular weight of 535.57 g/mol. It is also known as Piperacillin hydrate, Piperacillin monohydrate and (2S,5R,6R)-6-[[(2R)-[[(4-ethyl-2,3-dioxo-1-piperazinyl)carbonyl]amino]phenylacetyl]amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid. Key properties include a boiling point of 859.5°C at 760 mmHg and a flash point of 473.6°C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
66258-76-2
Jingsj CID
J-1322089-5
Molecular Formula
C23H29N5O8S
Chinese Name
哌拉西林
Molecular Weight
535.57 g/mol
Category
Organic Compounds
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point859.5°C at 760 mmHg
Flash Point473.6°C

Frequently Asked Questions

What is the CAS number of Piperacillin?

The CAS number of Piperacillin is 66258-76-2.

What are the molecular formula and molecular weight of Piperacillin?

Piperacillin has molecular formula C23H29N5O8S and molecular weight 535.57 g/mol.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Piperacillin (CAS 66258-76-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1322089-5 (accessed 2026-10-25).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.