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Cyclo(L-leucyl-L-prolyl)

Also known as: Cyclo(-Leu-Pro), Cyclo(L-Leu-L-Pro), Cyclo(L-prolyl-L-leucyl), Gancidin W, Maculosin, (3S,8aS)-3-Isobutylhexahydropyrrolo[1,2-a]pyrazine-1,4-dione, Cyclo(Pro-Leu)

Cyclo(L-leucyl-L-prolyl) (CAS 2873-36-1) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C11H18N2O2 and a molecular weight of 210.27 g/mol. Key properties include a melting point of 163-165ºC, a boiling point of 427.6±34.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 212.4±25.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
2873-36-1
Jingsj CID
J-1968987-3
Molecular Formula
C11H18N2O2
Molecular Weight
210.27 g/mol
Category
Organic Compounds
Last updated
8/21/2026

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Physicochemical Properties

Melting Point163-165ºC
Boiling Point427.6±34.0 °C at 760 mmHg
Density1.1±0.1 g/cm3
Flash Point212.4±25.7 °C
Exact Mass210.136826
PSA49.41000
LogP-0.84
Vapor Pressure0.0±1.0 mmHg at 25°C
Refractive Index1.530

Activity & Biological Data

Additional Information[1]. Yan PS, et al. Cyclo(L-leucyl-L-prolyl) produced by Achromobacter xylosoxidans inhibits aflatoxin production by Aspergillus parasiticus. Appl Environ Microbiol. 2004 Dec;70(12):7466-73.

Customs & Trade Information

HS Code2933990090
Summary2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of Cyclo(L-leucyl-L-prolyl)?

The CAS number of Cyclo(L-leucyl-L-prolyl) is 2873-36-1.

What are the molecular formula and molecular weight of Cyclo(L-leucyl-L-prolyl)?

Cyclo(L-leucyl-L-prolyl) has molecular formula C11H18N2O2 and molecular weight 210.27 g/mol.

What are the upstream and downstream products of Cyclo(L-leucyl-L-prolyl)?

For Cyclo(L-leucyl-L-prolyl), Upstream Products: L-Prolyl-L-leucine; Downstream Products: L-Leucine, L-Proline.

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

Last updated:

How to cite: Jingsj. "Cyclo(L-leucyl-L-prolyl) (CAS 2873-36-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1968987-3 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.