Cyclo(L-Phe-L-Pro)

环(L-苯丙氨酸-L-脯氨酸)二肽

Also known as: (3S,8aS)-3-Benzylhexahydropyrrolo[1,2-a]pyrazine-1,4-dione, Cyclo(-Phe-Pro), Cyclo(L-phenylalanyl-L-proline), Maculosine 2, CYCLO-L-PHENYLALANYL-L-PROLINE, Cyclo(Pro-Phe)

Cyclo(L-Phe-L-Pro) (CAS 3705-26-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C14H16N2O2 and a molecular weight of 244.289 g/mol. It is also known as (3S,8aS)-3-Benzylhexahydropyrrolo[1,2-a]pyrazine-1,4-dione, Cyclo(-Phe-Pro) and Cyclo(L-phenylalanyl-L-proline). Key properties include a boiling point of 509.5±39.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 262.0±27.1 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
3705-26-8
Jingsj CID
J-1244-1
Molecular Formula
C14H16N2O2
Chinese Name
环(L-苯丙氨酸-L-脯氨酸)二肽
Molecular Weight
244.289 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point509.5±39.0 °C at 760 mmHg
Density1.3±0.1 g/cm3
Flash Point262.0±27.1 °C

Frequently Asked Questions

What is the CAS number of Cyclo(L-Phe-L-Pro)?

The CAS number of Cyclo(L-Phe-L-Pro) is 3705-26-8.

What are the molecular formula and molecular weight of Cyclo(L-Phe-L-Pro)?

Cyclo(L-Phe-L-Pro) has molecular formula C14H16N2O2 and molecular weight 244.289 g/mol.

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

Last updated:

How to cite: Jingsj. "Cyclo(L-Phe-L-Pro) (CAS 3705-26-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1244-1 (accessed 2026-10-23).

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