5-Acetylsalicylic acid has anti~inflammatory effects and is considered an active agent in inflammatory bowel disease (IBD).

Physicochemical Properties

Molecular Formula	C9H8O4
Molecular Weight	180.15742
Exact Mass	180.042
CAS #	13110-96-8
PubChem CID	83151
Appearance	Typically exists as solid at room temperature
Density	1.365 g/cm3
Boiling Point	413ºC at 760 mmHg
Melting Point	214-216°C
Flash Point	250°C
Vapour Pressure	1.46E-07mmHg at 25°C
LogP	1.293
Hydrogen Bond Donor Count	2
Hydrogen Bond Acceptor Count	4
Rotatable Bond Count	2
Heavy Atom Count	13
Complexity	224
Defined Atom Stereocenter Count	0
SMILES	CC(=O)C1=CC(=C(C=C1)O)C(=O)O
InChi Key	NZRDKNBIPVLNHA-UHFFFAOYSA-N
InChi Code	InChI=1S/C9H8O4/c1-5(10)6-2-3-8(11)7(4-6)9(12)13/h2-4,11H,1H3,(H,12,13)
Chemical Name	5-acetyl-2-hydroxybenzoic acid
HS Tariff Code	2934.99.9001
Storage	Powder-20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month
Shipping Condition	Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)

Biological Activity

Additional Infomation

5-Acetylsalicylic acid is an aromatic ketone.

Solubility Data

Solubility (In Vitro)

DMSO : ~100 mg/mL (~555.06 mM)

Solubility (In Vivo)

Solubility in Formulation 1: ≥ 2.5 mg/mL (13.88 mM) (saturation unknown) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), clear solution. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 400 μL PEG300 and mix evenly; then add 50 μL Tween-80 to the above solution and mix evenly; then add 450 μL normal saline to adjust the volume to 1 mL. Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution. Solubility in Formulation 2: ≥ 2.5 mg/mL (13.88 mM) (saturation unknown) in 10% DMSO + 90% (20% SBE-β-CD in Saline) (add these co-solvents sequentially from left to right, and one by one), clear solution. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 900 μL of 20% SBE-β-CD physiological saline solution and mix evenly. Preparation of 20% SBE-β-CD in Saline (4°C，1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution. Solubility in Formulation 3: ≥ 2.5 mg/mL (13.88 mM) (saturation unknown) in 10% DMSO + 90% Corn Oil (add these co-solvents sequentially from left to right, and one by one), clear solution. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 900 μL of corn oil and mix evenly.  (Please use freshly prepared in vivo formulations for optimal results.)

Preparing Stock Solutions		1 mg	5 mg	10 mg
	1 mM	5.5506 mL	27.7531 mL	55.5062 mL
	5 mM	1.1101 mL	5.5506 mL	11.1012 mL
	10 mM	0.5551 mL	2.7753 mL	5.5506 mL

*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.