Fmoc-Cys(tBu)-OH

Fmoc-S-叔丁基-L-半胱氨酸

Also known as: Fmoc-S-tert-butyl-L-cysteine, S-tert-Butyl-N-[(9H-fluoren-9-ylmethoxy)carbonyl]-L-cysteine, N-[(9H-Fluoren-9-ylmethoxy)carbonyl]-S-(2-methyl-2-propanyl)-L-cysteine, (2R)-3-tert-butylsulfanyl-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanoic acid, Fmoc-Cys(But)-OH, Fmoc-L-Cys(tBu)-OH

Fmoc-Cys(tBu)-OH (CAS 67436-13-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C22H25NO4S and a molecular weight of 399.503 g/mol. It is also known as Fmoc-S-tert-butyl-L-cysteine, S-tert-Butyl-N-[(9H-fluoren-9-ylmethoxy)carbonyl]-L-cysteine and N-[(9H-Fluoren-9-ylmethoxy)carbonyl]-S-(2-methyl-2-propanyl)-L-cysteine. Key properties include a melting point of 135-137ºC, a boiling point of 603.4±55.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 318.7±31.5 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
67436-13-9
Jingsj CID
J-45617-3
Molecular Formula
C22H25NO4S
Chinese Name
Fmoc-S-叔丁基-L-半胱氨酸
Molecular Weight
399.503 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point135-137ºC
Boiling Point603.4±55.0 °C at 760 mmHg
Density1.2±0.1 g/cm3
Flash Point318.7±31.5 °C

Frequently Asked Questions

What is the CAS number of Fmoc-Cys(tBu)-OH?

The CAS number of Fmoc-Cys(tBu)-OH is 67436-13-9.

What are the molecular formula and molecular weight of Fmoc-Cys(tBu)-OH?

Fmoc-Cys(tBu)-OH has molecular formula C22H25NO4S and molecular weight 399.503 g/mol.

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

Last updated:

How to cite: Jingsj. "Fmoc-Cys(tBu)-OH (CAS 67436-13-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-45617-3 (accessed 2026-10-25).

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