Boc-S-Benzyl-L-cysteinol

Also known as: Boc-Cys(Bzl)-ol, Boc-Cysteinol(Bzl), N-α-t-Boc-S-benzyl-L-cysteinol, N-tert-Butoxycarbonyl-S-benzyl-L-cysteinol, tert-Butyl N-[(2R)-1-(benzylsulfanyl)-3-hydroxypropan-2-yl]carbamate, (R)-tert-Butyl (1-(benzylthio)-3-hydroxypropan-2-yl)carbamate, Carbamic acid, N-[(1R)-2-hydroxy-1-[[(phenylmethyl)thio]methyl]ethyl]-, 1,1-dimethylethyl ester, BOC-(R)-2-AMINO-3-BENZYLTHIO-1-PROPANOL, N-ALPHA-T-BOC-S-BENZYL-L-CYSTEINOL, N-T-BUTOXYCARBONYL-S-BENZYL-L-CYSTEINOL

Boc-S-Benzyl-L-cysteinol (CAS 139428-96-9) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C15H23NO3S and a molecular weight of 297.413 g/mol. Key properties include a boiling point of 442.9±40.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 221.7±27.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 139428-96-9
Jingsj CID: J-1519509-2
Molecular Formula: C₁₅H₂₃NO₃S
Molecular Weight: 297.413 g/mol
Category: Alcohols
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	442.9±40.0 °C at 760 mmHg
Density	1.1±0.1 g/cm3
Flash Point	221.7±27.3 °C
Exact Mass	297.139862
PSA	83.86000
LogP	3.40
Vapor Pressure	0.0±1.1 mmHg at 25°C
Refractive Index	1.547
Storage Conditions	Store at 0°C

Frequently Asked Questions

What is the CAS number of Boc-S-Benzyl-L-cysteinol?

The CAS number of Boc-S-Benzyl-L-cysteinol is 139428-96-9.

What are the molecular formula and molecular weight of Boc-S-Benzyl-L-cysteinol?

Boc-S-Benzyl-L-cysteinol has molecular formula C15H23NO3S and molecular weight 297.413 g/mol.

What are the upstream and downstream products of Boc-S-Benzyl-L-cysteinol?

For Boc-S-Benzyl-L-cysteinol, Upstream Products: Di-tert-butyl dicarbonate, (S)-2-Amino-3-(benzylthio)propan-1-ol, N-(tert-Butoxycarbonyl)-S-benzyl-L-cysteine.

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

Last updated: 8/21/2026

How to cite: Jingsj. "Boc-S-Benzyl-L-cysteinol (CAS 139428-96-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1519509-2 (accessed 2026-11-09).

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