Acetyl tetrapeptide-5

Also known as: Eyeseryl, Depuffin, N-Acetyl-beta-alanyl-L-histidyl-L-seryl-L-histidine, Acetyl Tetrapeptide-5/eyeseryl, Acetyl Tetrapeptide, UNII-Y1DFQ308G8

Acetyl tetrapeptide-5 (CAS 820959-17-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C20H28N8O7 and a molecular weight of 492.486 g/mol. Key properties include a boiling point of 1237.3±65.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 702.1±34.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 820959-17-9
Jingsj CID: J-1971306-7
Molecular Formula: C₂₀H₂₈N₈O₇
Molecular Weight: 492.486 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	1237.3±65.0 °C at 760 mmHg
Density	1.4±0.1 g/cm3
Flash Point	702.1±34.3 °C
Exact Mass	492.208099
PSA	245.25000
LogP	-3.79
Vapor Pressure	0.0±0.3 mmHg at 25°C
Refractive Index	1.611
Storage Conditions	2-8℃

Activity & Biological Data

Target	ACE-1[1]
Additional Information	[1]. Yun Wu, et al. Protective and Anti-Aging Effects of 5 Cosmeceutical Peptide Mixtures on Hydrogen Peroxide-Induced Premature Senescence in Human Skin Fibroblasts. Skin Pharmacol Physiol. 2021;34(4):194-202. [2]. Lijuan Zhang, et al. Cosmeceuticals and peptides. Clin Dermatol. 2009 Sep-Oct;27(5):485-94. [3]. Puig A , et al. "Eyeseryl® and Leuphasyl®: synthetic peptides as advanced cosmetic actives. Cosmet Sci Technol (2006): 164-75.

Target

ACE-1[1]

Additional Information

[1]. Yun Wu, et al. Protective and Anti-Aging Effects of 5 Cosmeceutical Peptide Mixtures on Hydrogen Peroxide-Induced Premature Senescence in Human Skin Fibroblasts. Skin Pharmacol Physiol. 2021;34(4):194-202. [2]. Lijuan Zhang, et al. Cosmeceuticals and peptides. Clin Dermatol. 2009 Sep-Oct;27(5):485-94. [3]. Puig A , et al. "Eyeseryl® and Leuphasyl®: synthetic peptides as advanced cosmetic actives. Cosmet Sci Technol (2006): 164-75.

Frequently Asked Questions

What is the CAS number of Acetyl tetrapeptide-5?

The CAS number of Acetyl tetrapeptide-5 is 820959-17-9.

What are the molecular formula and molecular weight of Acetyl tetrapeptide-5?

Acetyl tetrapeptide-5 has molecular formula C20H28N8O7 and molecular weight 492.486 g/mol.

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. "Acetyl tetrapeptide-5 (CAS 820959-17-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1971306-7 (accessed 2026-11-07).

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