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Boc-Pyr-OtBu

Also known as: Di-tert-butyl (2S)-5-oxopyrrolidine-1,2-dicarboxylate, Boc-L-pyroglutamic acid tert-butyl ester, tert-Butyl (2S)-5-oxo-1-(tert-butoxycarbonyl)pyrrolidine-2-carboxylate, 1,2-Pyrrolidinedicarboxylic acid, 1,2-bis(1,1-dimethylethyl) ester, (2S)-, Bis(tert-Butyl) (2S)-5-oxo-1,2-pyrrolidinedicarboxylate

Boc-Pyr-OtBu (CAS 91237-84-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C14H25NO4 and a molecular weight of 271.35700 g/mol. Key properties include a boiling point of 390.663°C at 760 mmHg, a density of 1.138g/cm3 and a flash point of 190.067°C. No supplier offers are currently listed; request a quote. Record last updated Nov 2, 2026.

CAS No.
91237-84-2
Jingsj CID
J-1357102-3
Molecular Formula
C14H25NO4
Molecular Weight
271.35700 g/mol
Category
Organic Acids
Last updated
11/2/2026

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Physicochemical Properties

Boiling Point390.663°C at 760 mmHg
Density1.138g/cm3
Flash Point190.067°C
Exact Mass285.15800
PSA72.91000
LogP2.19210

Frequently Asked Questions

What is the CAS number of Boc-Pyr-OtBu?

The CAS number of Boc-Pyr-OtBu is 91237-84-2.

What are the molecular formula and molecular weight of Boc-Pyr-OtBu?

Boc-Pyr-OtBu has molecular formula C14H25NO4 and molecular weight 271.35700 g/mol.

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

Last updated:

How to cite: Jingsj. "Boc-Pyr-OtBu (CAS 91237-84-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1357102-3 (accessed 2026-11-09).

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