Is thioacetamide toxic?
Is thioacetamide toxic?
Thioacetamide is highly toxic to the liver in vivo because it is rapidly metabolized by cytochrome P450 and flavin-containing monooxygenases into its reactive metabolites (thioacetamide-S-oxide and reactive oxygen species) (Hajovsky et al., 2012).
What is a toxicity pathway?
“A toxicity pathway is a sequence of intracellular events which regulate normal. biology which, when sufficiently perturbed by a xenobiotic, leads to an adverse outcome at the level of the cell, and possibly the whole organism.”
What is thioacetamide used for?
Thioacetamide has been used as an organic solvent in the leather, tex- tile, and paper industries, as an accelerator in the vulcanization of buna rubber (synthetic polybutadiene), and as a stabilizer of motor fuel.
Is thioacetamide an acid?
Thioacetamide is an organosulfur compound with the formula C2H5NS. This white crystalline solid is soluble in water and serves as a source of sulfide ions in the synthesis of organic and inorganic compounds. It is a prototypical thioamide….Thioacetamide.
| Names | |
|---|---|
| Related compounds | acetamide, dithioacetic acid |
How is thioacetamide prepared?
Thioacetamide TS: Dissolve 4 g of thioacetamide in 100-mL of purified water….
- Add to the carbonized mass 2 mL of nitric acid and 5 drops of sulfuric acid, and heat cautiously until white fumes no longer are evolved.
- Ignite, preferably in a muffle furnace, at 500 to 600°C, until the carbon is completely burned off.
Why is thioacetamide used instead of h2s?
The time re- quired for complete precipitation of the insoluble sulfides by thioactamide was less than the overall time required when gaseous hydrogen sulfide was used. The advantages of thioacetamide solution are tolerable odor, good stahility, low cost, and a high degree of solubility in water.
What is the purpose of using thioacetamide?
Thioacetamide is widely used in classical qualitative inorganic analysis as an in situ source for sulfide ions. Thus, treatment of aqueous solutions of many metal cations to a solution of thioacetamide affords the corresponding metal sulfide: M2+ + CH3C(S)NH2 + H2O → MS + CH3C(O)NH2 + 2 H+ (M = Ni, Pb, Cd, Hg)
What does thioacetamide produce?
Thioacetamide is an organosulfur compound with the formula C2H5NS. This white crystalline solid is soluble in water and serves as a source of sulfide ions in the synthesis of organic and inorganic compounds. It is a prototypical thioamide….Thioacetamide.
| Names | |
|---|---|
| Related compounds | |
| Related compounds | acetamide, dithioacetic acid |
What does thioacetamide smell like?
Thioacetamide occurs as a colorless leaf-like material with a slight Sulfur-like odor.
How do you make thioacetamide solution?
Thioacetamide TS: Dissolve 4 g of thioacetamide in 100-mL of purified water. Glycerin base TS: To 200 g of glycerin add purified water to bring total weight to 235 g. Then add 140 mL of 1N sodium hydroxide and 50 mL of purified water.
What kind of bioactivation does thioacetamide have?
Thioacetamide (TA), a centrilobular hepatotoxicant, undergoes a two-step bioactivation mediated by cytochrome P450 (CYP)2E1 to TA sulfoxide (TASO) and further to thioacetamide sulfdioxide (TASO2), a reactive metabolite that initiates cellular necrosis.
How is thioacetamide harmful to the human body?
When heated to decomposition, it emits toxic fumes of nitrogen oxides and sulfur oxides. The primary routes of potential human exposure to thioacetamide are inhalation and dermal contact. It is reasonably anticipated to be a human carcinogen.
How is thioacetamide used as a model for cirrhosis?
Thioacetamide (TAA) administration is a common model to recreate acute liver injury and cirrhosis in animals and replicates human disease induced by a variety of etiologies.
Why is thioacetamide used as a substitute for hydrogen sulfide?
Thioacetamide is a synthetic, colorless crystalline solid that is soluble in water and ethanol. Thioacetamide is currently only used as a replacement for hydrogen sulfide in qualitative analysis. When heated to decomposition, it emits toxic fumes of nitrogen oxides and sulfur oxides.
