Praziquantel?CAS 55268-74-1
Chemical Name: Praziquantel
Assay: 98.5%?101.0% (dried basis)
Appearance: White or practically white, crystalline powder
Packing:?1kg/Foil bag
Sample: Available
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Description
Praziquantel?quick Details
Chemical Name: Praziquantel
CAS No: 55268-74-1
Molecular Formula??C19H24N2O2
Molecular Weight??312.41
Appearance: White or practically white, crystalline powder
Assay: 98.5%?101.0% (dried basis)
Praziquantel Typical Properties
Item
Specifications
Appearance
White or practically white, crystalline powder
Solubility
Freely soluble in alcohol and in chloroform; very slightly soluble in water.
Identification
IR: the infrared spectrum of a potassium bromide dispersion is consistent with a reference standard
HPLC. The retention time of the major peak of the sample solution corresponds to that of the standard solution, as obtained in the assay
Heavy metals
Not more than 0.002%
Phosphate
Not more than 0.05%
Loss on drying
Not more than 0.5%
Residue on ignition
Not more than 0.1%
Related Substances
Related compound A: not more than 0.2%
Related compound B: not more than 0.2%
Related compound C: not more than 0.2%
Assay
98.5%?101.0% (dried basis)
Residual Solvents
Limit of Dichloromethane: NMT 600ppm
Limit of ethyl acetate: NMT 5000 ppm
Limit of ethanol: NMT 5000 ppm
Praziquantel?Usage
Broad-spectrum antiparasitic drugs. For the treatment and prevention of schistosomiasis, cysticercosis, paragonimiasis, echinococcosis, ginger worm disease, echinococcosis, worm infections, etc.
Praziquantel?Packaging
Packing:?1kg/Foil bag
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- cas:67889-00-3ح2
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- Chemical Minerals
- Coconut diethanolamide
- Daily Chemicals
- discount
- for sale
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- LAURIC ACID MONOETHANOLAMIDE
- Petroleum Additives
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- Raw Materal
- Remove term: Petroleum Additives Petroleum Additive
- SODIUM ETHYL 2-SULFOLAURATE
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Levodopa, also known as L-DOPA or 3,4-dihydroxy-L-phenylalanine, is a naturally occurring amino acid and a critical precursor in the biosynthesis of the neurotransmitters dopamine, norepinephrine, and epinephrine. With the molecular formula C9H11NO4, levodopa is a large, neutral amino acid that plays a significant role in the treatment of Parkinson’s disease due to its ability to cross the blood-brain barrier and be converted into dopamine.
Chemically, levodopa is synthesized from the precursor amino acid tyrosine through the action of the enzyme tyrosine hydroxylase. As a medication, levodopa is often formulated with a peripheral DOPA decarboxylase inhibitor to reduce its conversion to dopamine outside the brain, thereby increasing its effectiveness and reducing side effects.
Levodopa is characterized by its effectiveness in alleviating the motor symptoms of Parkinson’s disease, such as tremors, rigidity, and bradykinesia. It is typically administered orally and absorbed from the gastrointestinal tract, where it is then transported to the brain.
In summary, levodopa is a vital pharmaceutical compound used in neurology for its role in treating Parkinson’s disease by replenishing the brain’s dopamine levels. Its targeted delivery and conversion to dopamine make it an essential treatment option for managing the motor symptoms associated with this condition.
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