Acetylsalicylic acid

SIGMA/A5376 - ≥99.0%

Synonym: 2-Acetoxybenzoic acid; O-Acetylsalicylic acid; ASA; Aspirin

CAS Number: 50-78-2
Empirical Formula (Hill Notation): C₉H₈O₄
Molecular Weight: 180.16
EC Number: 200-064-1
MDL Number: MFCD00002430
Linear Formula: 2-(CH₃CO₂)C₆H₄CO₂H
Product Type: Chemical

Catalog Number	PKG Qty.	Price


45-A5376-100G	100 g	$27.50 1/EA	Add To Favorites
45-A5376-250G	250 g	$41.10 1/EA	Add To Favorites
45-A5376-500G	500 g	$79.90 1/EA	Add To Favorites
45-A5376-1KG	1 kg	$144.00 1/EA	Add To Favorites

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This image depicts SKU: A5376-100G

Properties
Descriptions
Safety Info.
Basic Data

ε (extinction coefficient)	190 at 298 nm in aqueous base at 1 mM
	409 at 231 nm in aqueous base at 1 mM
	466 at 230 nm in aqueous acid at 1 mM
	68 at 278 nm in aqueous acid at 1 mM
assay	≥99.0%
biological source	synthetic
color	white
form	powder
InChI	1S/C9H8O4/c1-6(10)13-8-5-3-2-4-7(8)9(11)12/h2-5H,1H3,(H,11,12)
InChI key	BSYNRYMUTXBXSQ-UHFFFAOYSA-N
mp	134-136 °C (lit.)
pKa (25 °C)	3.5
Quality Level	200
SMILES string	CC(=O)Oc1ccccc1C(O)=O
solubility	aqueous base: decomposes
	ethanol: 50 mg/mL
	H₂O: 10 mg/mL at 37 °C(lit.)
	H₂O: 3 mg/mL at 25 °C(lit.)

Biochem/physiol Actions:	Blocks the production of prostaglandins by inhibiting cyclooxygenase (prostaglandin H synthase), with greater selectivity toward the COX-1 isoform. The antithrombotic effect is due to the inhibition of COX-1 in platelets that blocks thromboxane production and platelet aggregation. Chemopreventive against colorectal and other solid tumors.
General description:	Acetylsalicylic acid is an organic compound commonly referred to as aspirin. It works by blocking the production of compounds in the body that cause pain, swelling, and fever. Acetylsalicylic acid also serves a vital function in preventing blood clots from forming in the arteries. In research, acetylsalicylic acid is studied for its role in oxidative stress, and in cancer research as a biomarker.
Packaging:	1 kg in poly bottle
Packaging:	100, 250, 500 g in poly bottle

Symbol	GHS07
Signal word	Warning
Hazard statements	H302
Precautionary statements	P301 + P312 + P330
Hazard Codes	Xn
Risk Statements	22-36/37/38
Safety Statements	26
RIDADR	NONH for all modes of transport
WGK Germany	WGK 1
Flash Point(F)	482.0 °F
Flash Point(C)	250 °C

Purity	≥99.0%
mp	134-136 °C (lit.)
UNSPSC	12352106

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