molecular formula C4H6N4O3S2 B1664987 Acetazolamide CAS No. 59-66-5

Acetazolamide

Cat. No.: B1664987
CAS No.: 59-66-5
M. Wt: 222.3 g/mol
InChI Key: BZKPWHYZMXOIDC-UHFFFAOYSA-N
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Description

Acetazolamide is a carbonic anhydrase inhibitor widely used in the medical field. It is known for its applications in treating glaucoma, epilepsy, acute mountain sickness, periodic paralysis, idiopathic intracranial hypertension, and heart failure. The compound is also used to alkalinize urine . This compound was first introduced in 1952 and is available as a generic medication .

Safety and Hazards

Acetazolamide may damage fertility or the unborn child . It is advised to avoid dust formation, breathing mist, gas or vapours, and contacting with skin and eye. Use personal protective equipment and ensure adequate ventilation .

Future Directions

Acetazolamide added to intravenous loop diuretics decreases congestion within three days in patients with acute decompensated heart failure . The ADVOR trial examined whether the addition of this compound to intravenous loop diuretics improves decongestion in patients with acute decompensated heart failure .

Biochemical Analysis

Biochemical Properties

Acetazolamide’s major biochemical and pharmacological effect is deemed to be carbonic anhydrase inhibition . It interacts with this enzyme, inhibiting its activity . This interaction plays a significant role in the biochemical reactions involving this compound .

Cellular Effects

This compound has a profound impact on cellular membrane ion/water channel activity . It influences cell function by modulating these channels, which can affect cell signaling pathways, gene expression, and cellular metabolism .

Molecular Mechanism

The molecular mechanism of this compound is primarily based on its inhibition of carbonic anhydrase . This inhibition leads to changes in ion/water channel activity at the cellular membrane, which can result in changes in gene expression .

Temporal Effects in Laboratory Settings

The effects of this compound can change over time in laboratory settings . Information on the product’s stability, degradation, and any long-term effects on cellular function observed in in vitro or in vivo studies is currently being researched .

Dosage Effects in Animal Models

The effects of this compound can vary with different dosages in animal models . Studies are ongoing to determine any threshold effects observed in these studies, as well as any toxic or adverse effects at high doses .

Metabolic Pathways

This compound is involved in metabolic pathways through its interaction with carbonic anhydrase . This interaction can affect metabolic flux or metabolite levels .

Transport and Distribution

It is believed to interact with certain transporters or binding proteins, which could affect its localization or accumulation .

Subcellular Localization

The subcellular localization of this compound and its effects on its activity or function are areas of active research . It is possible that certain targeting signals or post-translational modifications direct it to specific compartments or organelles .

Preparation Methods

Synthetic Routes and Reaction Conditions: The synthesis of acetazolamide involves the oxidation of a thiol derivative to form a sulfonyl chloride intermediate. This intermediate then reacts with various amines, hydrazones, and bis-amine precursors to create new sulfonamide derivatives . The oxidation process can be enhanced by substituting chlorine gas with sodium hypochlorite (commercial bleach), which improves safety and environmental conditions .

Industrial Production Methods: In industrial settings, this compound is produced by mixing this compound with lactose, cornstarch, pregelatinized starch, PVP, sucrose, and carboxymethyl starch sodium. The mixture is then pelletized, dried, and tabletted to obtain this compound tablets .

Comparison with Similar Compounds

Uniqueness of this compound: this compound stands out due to its potent inhibitory effect on carbonic anhydrase, making it highly effective in treating a wide range of medical conditions. Its ability to act as a diuretic, anticonvulsant, and glaucoma medication highlights its versatility and importance in both clinical and research settings .

Properties

IUPAC Name

N-(5-sulfamoyl-1,3,4-thiadiazol-2-yl)acetamide
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Description Data deposited in or computed by PubChem

InChI

InChI=1S/C4H6N4O3S2/c1-2(9)6-3-7-8-4(12-3)13(5,10)11/h1H3,(H2,5,10,11)(H,6,7,9)
Source PubChem
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Description Data deposited in or computed by PubChem

InChI Key

BZKPWHYZMXOIDC-UHFFFAOYSA-N
Source PubChem
URL https://pubchem.ncbi.nlm.nih.gov
Description Data deposited in or computed by PubChem

Canonical SMILES

CC(=O)NC1=NN=C(S1)S(=O)(=O)N
Source PubChem
URL https://pubchem.ncbi.nlm.nih.gov
Description Data deposited in or computed by PubChem

Molecular Formula

C4H6N4O3S2
Record name ACETAZOLAMIDE
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Related CAS

1424-27-7 (mono-hydrochloride salt)
Record name Acetazolamide [USP:INN:BAN:JAN]
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DSSTOX Substance ID

DTXSID7022544
Record name Acetazolamide
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Molecular Weight

222.3 g/mol
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Physical Description

Acetazolamide appears as white to yellowish-white fine crystalline powder. No odor or taste. (NTP, 1992), Solid
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Solubility

>33.3 [ug/mL] (The mean of the results at pH 7.4), less than 1 mg/mL at 72 °F (NTP, 1992), SPARINGLY SOL IN COLD WATER, SLIGHTLY SOL IN ALCOHOL, INSOL IN CHLOROFORM, DIETHYL ETHER, CARBON TETRACHLORIDE; SLIGHTLY SOL IN ACETONE, Readily soluble in 1 N sodium carbonate solution., In water= 980 mg/l at 30 °C., 2.79e+00 g/L
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Record name ACETAZOLAMIDE
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Mechanism of Action

The anticonvulsant activity of Acetazolamide may depend on a direct inhibition of carbonic anhydrase in the CNS, which decreases carbon dioxide tension in the pulmonary alveoli, thus increasing arterial oxygen tension. The diuretic effect depends on the inhibition of carbonic anhydrase, causing a reduction in the availability of hydrogen ions for active transport in the renal tubule lumen. This leads to alkaline urine and an increase in the excretion of bicarbonate, sodium, potassium, and water., Carbonic anhydrase inhibitors potently inhibit (IC50 for acetazolamide is 10 nM) both the membrane bound and cytoplasmic forms of carbonic anhydrase, resulting in nearly complete abolition of NaHCO3 reabsorption in the proximal tubule. /Carbonic Anhydrase Inhibitors/, Although the proximal tubule is the major site of action of carbonic anhydrase inhibitors, carbonic anhydrase also is involved in secretion of titratable acid in the collecting duct system (a process which involves a proton pump), and therefore the collecting duct system is a secondary site of action for this class of drugs. /Carbonic Anhydrase Inhibitors/, Acetazolamide frequently causes paresthesias and somnolence, suggesting an action of carbonic anhydrase inhibitors in the CNS. The efficacy of acetazolamide in epilepsy is in part due to the production of metabolic acidosis; however, direct actions of acetazolamide in the CNS also contribute to its anticonvulsant action., ... Inhibition of carbonic anhydrase decreases the rate of formation of aqueous humor and consequently reduce intraocular pressure. /Carbonic Anhydrase Inhibitors/, For more Mechanism of Action (Complete) data for ACETAZOLAMIDE (6 total), please visit the HSDB record page.
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Color/Form

CRYSTALS FROM WATER, WHITE TO FAINTLY YELLOWISH WHITE, CRYSTALLINE, POWDER

CAS No.

59-66-5
Record name ACETAZOLAMIDE
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Melting Point

496 to 498 °F (effervescence) (NTP, 1992), 258-259 °C (EFFERVESCENCE), 260.5 °C
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Synthesis routes and methods

Procedure details

AL4414A; diclofenamide; dorzolamide; methazolamide; sezolamide; sulocarbilate.
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Retrosynthesis Analysis

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Top-N result to add to graph 6

Feasible Synthetic Routes

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