Molecular structure of C264H460N128O65S7

Protamine sulfate

硫酸鱼精蛋白

Also known as: Protamine sulphate, Salmine sulfate, Protamine sulfate salt, Protamine sulfate from salmon, Sprotamine sulfate

Protamine sulfate (CAS 9009-65-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C264H460N128O65S7 and a molecular weight of 6691.85629 g/mol. It is also known as Protamine sulphate, Salmine sulfate and Protamine sulfate salt. Key properties include a boiling point of 330.0±11.0 °C at 760 mmHg and a density of 2.2±0.1 g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 9009-65-8
Jingsj CID: J-50972-3
Molecular Formula: C₂₆₄H₄₆₀N₁₂₈O₆₅S₇
Chinese Name: 硫酸鱼精蛋白
Molecular Weight: 6691.85629 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	330.0±11.0 °C at 760 mmHg
Density	2.2±0.1 g/cm3
Exact Mass	6687.46695
LogP	-1.03
Appearance	amorphous powder \| white
Vapor Pressure	0.0±1.5 mmHg at 25°C
Refractive Index	1.537
Additional Property	H2O: 10 mg/mL \| It is sparingly soluble in water.

Activity & Biological Data

Additional Information	[1]. Ahmed Kouta, et al. Protamine Sulfate Neutralization Profile of Various Dosages of Bovine, Ovine and Porcine UFHs and Their Depolymerized Derivatives in Non-Human Primates. Clin Appl Thromb Hemost. Jan-Dec 2021;27:10760296211005544. [2]. F L Sorgi, et al. Protamine sulfate enhances lipid-mediated gene transfer. Gene Ther. 1997 Sep;4(9):961-8. [3]. R J Cobel-Geard, et al. Interaction of protamine sulfate with thrombin. Am J Hematol. 1983 May;14(3):227-33. [4]. Fionnuala Ni Ainle, et al. Protamine sulfate down-regulates thrombin generation by inhibiting factor V activation. Blood. 2009 Aug 20;114(8):1658-65.

Additional Information

[1]. Ahmed Kouta, et al. Protamine Sulfate Neutralization Profile of Various Dosages of Bovine, Ovine and Porcine UFHs and Their Depolymerized Derivatives in Non-Human Primates. Clin Appl Thromb Hemost. Jan-Dec 2021;27:10760296211005544. [2]. F L Sorgi, et al. Protamine sulfate enhances lipid-mediated gene transfer. Gene Ther. 1997 Sep;4(9):961-8. [3]. R J Cobel-Geard, et al. Interaction of protamine sulfate with thrombin. Am J Hematol. 1983 May;14(3):227-33. [4]. Fionnuala Ni Ainle, et al. Protamine sulfate down-regulates thrombin generation by inhibiting factor V activation. Blood. 2009 Aug 20;114(8):1658-65.

Frequently Asked Questions

What is the CAS number of Protamine sulfate?

The CAS number of Protamine sulfate is 9009-65-8.

What are the molecular formula and molecular weight of Protamine sulfate?

Protamine sulfate has molecular formula C264H460N128O65S7 and molecular weight 6691.85629 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "Protamine sulfate (CAS 9009-65-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-50972-3 (accessed 2026-10-28).

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