N-Acetyl-L-carnosine

Also known as: N-Acetylcarnosine, Acetylcarnosine, N-(N-Acetyl-beta-alanyl)-L-histidine, L-Histidine, N-acetyl-β-alanyl-, (2S)-2-(3-acetamidopropanoylamino)-3-(1H-imidazol-5-yl)propanoic acid, (S)-2-(3-ACETYLAMINO-PROPIONYLAMINO)-3-(3H-IMIDAZOL-4-YL)-PROPIONIC ACID, N-Acetyl-β-alanyl-L-histidine, N-Acetyl carnosine, n-acetyl carnosine

N-Acetyl-L-carnosine (CAS 56353-15-2) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C11H16N4O4 and a molecular weight of 268.269 g/mol. Key properties include a melting point of 253 - 260ºC, a boiling point of 775.9±60.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 423.0±32.9 °C. It is listed by 1 supplier; request a quote for pricing. Record last updated Aug 21, 2026.

CAS No.: 56353-15-2
Jingsj CID: J-1958914-1
Molecular Formula: C₁₁H₁₆N₄O₄
Molecular Weight: 268.269 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	253 - 260ºC
Boiling Point	775.9±60.0 °C at 760 mmHg
Density	1.3±0.1 g/cm3
Flash Point	423.0±32.9 °C
Exact Mass	268.117157
PSA	124.18000
LogP	-2.56
Vapor Pressure	0.0±2.8 mmHg at 25°C
Refractive Index	1.563
Storage Conditions	Hygroscopic, -20°C Freezer, Under Inert Atmosphere

Activity & Biological Data

Additional Information	[1]. Babizhayev MA, et al. N-Acetylcarnosine, a natural histidine-containing dipeptide, as a potent ophthalmic drug in treatment of human cataracts. Peptides. 2001 Jun;22(6):979-94. [2]. Dubois VD, et al. N-acetylcarnosine (NAC) drops for age-related cataract. Cochrane Database Syst Rev. 2017 Feb 28;2:CD009493. [3]. Babizhayev MA, et al. Potentiation of intraocular absorption and drug metabolism of N-acetylcarnosine lubricant eye drops: drug interaction with sight threatening lipid peroxides in the treatment for age-related eye diseases. Drug Metabol Drug Interact. 2009;24(2-4):275-323.

Additional Information

[1]. Babizhayev MA, et al. N-Acetylcarnosine, a natural histidine-containing dipeptide, as a potent ophthalmic drug in treatment of human cataracts. Peptides. 2001 Jun;22(6):979-94. [2]. Dubois VD, et al. N-acetylcarnosine (NAC) drops for age-related cataract. Cochrane Database Syst Rev. 2017 Feb 28;2:CD009493. [3]. Babizhayev MA, et al. Potentiation of intraocular absorption and drug metabolism of N-acetylcarnosine lubricant eye drops: drug interaction with sight threatening lipid peroxides in the treatment for age-related eye diseases. Drug Metabol Drug Interact. 2009;24(2-4):275-323.

Customs & Trade Information

HS Code	2933290090
Summary	2933290090. other compounds containing an unfused imidazole ring (whether or not hydrogenated) in the structure. 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 N-Acetyl-L-carnosine?

The CAS number of N-Acetyl-L-carnosine is 56353-15-2.

What are the molecular formula and molecular weight of N-Acetyl-L-carnosine?

N-Acetyl-L-carnosine has molecular formula C11H16N4O4 and molecular weight 268.269 g/mol.

Which suppliers offer N-Acetyl-L-carnosine?

1 supplier(s) listed; request a quote for pricing.

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. "N-Acetyl-L-carnosine (CAS 56353-15-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1958914-1 (accessed 2026-11-09).

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