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N,N'-Diacetyl-L-cystine

Also known as: (ac-cys-oh)2, DiNAC, L-Cystine, N,N'-diacetyl-, N,N'-diacetyl-cystine, N,N`-Diacetyl-L-cystine, diacetylcysteine

N,N'-Diacetyl-L-cystine (CAS 5545-17-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C10H16N2O6S2 and a molecular weight of 324.374 g/mol. Key properties include a melting point of 55-72ºC, a boiling point of 715.5±60.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 386.5±32.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
5545-17-5
Jingsj CID
J-1969348-2
Molecular Formula
C10H16N2O6S2
Molecular Weight
324.374 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point55-72ºC
Boiling Point715.5±60.0 °C at 760 mmHg
Density1.5±0.1 g/cm3
Flash Point386.5±32.9 °C
Exact Mass324.044983
PSA183.40000
LogP0.46
Vapor Pressure0.0±5.0 mmHg at 25°C
Refractive Index1.583
Storage Conditions-15°C
StabilityMoisture Sensitive

Activity & Biological Data

TargetImmunomodulator[1]
Additional Information[1]. Wågberg M, et al. N,N'-diacetyl-L-cystine (DiNAC), the disulphide dimer of N-acetylcysteine, inhibits atherosclerosis in WHHL rabbits: evidence for immunomodulatory agents as a new approach to prevent atherosclerosis. J Pharmacol Exp Ther. 2001 Oct;299(1):76-82. [2]. Särnstrand B, et al. N,N'-Diacetyl-L-cystine-the disulfide dimer of N-acetylcysteine-is a potent modulator of contact sensitivity/delayed type hypersensitivity reactions in rodents. J Pharmacol Exp Ther. 1999 Mar;288(3):1174-84.

Frequently Asked Questions

What is the CAS number of N,N'-Diacetyl-L-cystine?

The CAS number of N,N'-Diacetyl-L-cystine is 5545-17-5.

What are the molecular formula and molecular weight of N,N'-Diacetyl-L-cystine?

N,N'-Diacetyl-L-cystine has molecular formula C10H16N2O6S2 and molecular weight 324.374 g/mol.

What are the upstream and downstream products of N,N'-Diacetyl-L-cystine?

For N,N'-Diacetyl-L-cystine, Upstream Products: N-Acetyl-L-cysteine, L-Cystine, L-Cysteine; Downstream Products: L-Cystine, Ammonia.

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

Last updated:

How to cite: Jingsj. "N,N'-Diacetyl-L-cystine (CAS 5545-17-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1969348-2 (accessed 2026-11-09).

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