Drontal Factory Supply Veterinary Material Praziquantel (55268-74-1)

Model: Drontal powder
Place of Origin: Hubei,China (Mainland)
Brand Name: gongchuang
CAS No.: 55268-74-1
Purity: 99%
Alias: Dyclonine
source: Dyclonine from China
usage: Dyclonine
supplier: Dyclonine supplier
price: Dyclonine price
Usage: Dyclonine for medical
effects: Dyclonine
purity: 99% Dyclonine
Appearance: Dyclonine powder
Standard: USP/BP/USP Dyclonine


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Product Description

Payment & Shipping Terms Supply Capacity
Unit Price:90.0 USDProduction Capacity:500kg//month
Payment Terms:Bitcoin, WU, Money Gram, T/T, D/APacking:disguise package or as...
Min. Order:1 GramDelivery Date:4-15days
Means of Transport:Ocean, Express, Air

Factory Supply Veterinary Material Praziquantel (55268-74-1)

Broad Spectrum Anthelmintic Praziquantel CAS: 55268-74-1 on Sale


Synonyms:Drontal; Prestwick_402; 4H-Pyrazino(2,1-a)isoquinolin-4-one, 2-(cyclohexylcarbonyl)-1,2,3,6,7,11b-hexahydro-; Biltricide (TN); 2-(Cyclohexylcarbonyl)-1,2,3,6,7,11b-hexahydro-4H-pyrazino(2,1-a)isoquinolin-4-one; 5-24-03-00361 (Beilstein Handbook Reference); 2-(Cyclohexylcarbonyl)-1,2,3,6,7,11b-hexahydro- 4H-pyrazino[2,1-a]-isoquinolin-4-one; Drontal Plus; Droncit; Praziquantel (JAN/USP); Cutter;

Praziquantel CAS Registry Number:55268-74-1

Praziquantel EINECS:259-559-6

Praziquantel Molecular Formula:C19H24N2O2

Praziquantel Molecular Weight:312.40606


Praziquantel Molecular Weight:312.40606

Praziquantel Density:1.22 g/cm3

Praziquantel Boiling Point:544.1oCat 760 mmHg

Praziquantel Melting Point:136ºC~142oC

Praziquantel Flash Point:254.6oC

Praziquantel Storage Temperature:?20°C


Stability:Stable at normal temperatures and pressures.

Praziquantel Usage:Broad spectrum anthelmintic.

Praziquantel Function 

Praziquantel works by killing the worms. It is effective against acanthocephala and tapeworm in fish species.

Praziquantel Usage

Mix with fish feed. 0.05-0.1g/kg body weight/3-4 days. Feed 3 times consecutively.

Praziquantel Precautions

1. Stop feeding the animals the day before using Praziquantel.

2. Feed megalobrama amblycephala with caution.

Praziquantel Usage And Synthesis
The treatment of schistosomiasisSchistosomiasis is parasitic disease with both human and animal being prone to get infected. Schistosome has a relative complicated life history. Adult parasites live in the mesenteric vein and portal vein blood of people, cattle, pigs and some other mammals, and therefore humans and these animals are called as the adult host or definitive host. 
Praziquantel is a kind of common drug for treatment of schistosomiasis with an extremely small animal toxicity. After its oral administration, it is rapidly absorbed in the digestive tract. The time of the plasma concentration for reaching peaks: 5 minutes for mice, l5 ~ 30 minutes for rat, 30 to 120 minutes for dogs, and 2 h for sheep. After its absorption this drug is widely distributed in all tissues and organs; it is even able to penetrate through the blood-brain barrier of rats and can also enter into the bile of dogs. It can induce of influx of the Ca 2+ located outside of the schistosome parasite muscle cell membrane, and thus causing muscle contractures and loss of ability of sucking parasite location. At the same time, it also causes deficiency in sugar metabolism and energy metabolism, disrupting the "With immunization" state and then working together with the host immune system for finally eliminating the parasites. Therefore, it has good killing efficacy in treating China branch schistosomiasis, tapeworm, lung fluke, cysticercosis and also immature parasites (cercariae and miracidia). 
The common side effects of praziquantel are as follows: 
1. during the first 1 hour of medication of the first time: dizziness, headache, nausea, abdominal pain, diarrhea, fatigue, aching limbs can occur, usually at a lesser extent and short duration, and does not affect the treatment without specific treatment. 
2. in a few cases, there may be symptoms such as heart palpitations, chest tightness, and T wave change and primary contraction in ECG; supraventricular tachycardia and atrial fibrillation can sometimes also happen.
3. in a few cases there may be a transient increase in transaminases and toxic hepatitis.
4. it sometimes can induce mental disorders and gastrointestinal bleeding.
5. hernia, allergic reactions (rash, asthma), etc. are also seen.
Chemical PropertiesIt is white or almost white crystalline powder; it is odorless with a slightly bitter taste. It also has hygroscopic effect. Solubility (g/100m1): 9.7 in ethanol, 56.7 in chloroform, and 0.04 in water. It is easily soluble in dimethyl sulfoxide (DMSO), but insoluble in ether. It has a melting point of 136 ~ 141 ºC. Acute toxicity LD50 in mice and rats (mg/kg): 2000 ~ 3000 oral administration,> 3,000 subcutaneously injection.
ApplicationIt is a kind of broad-spectrum anti-parasitic disease drug. It can be used for the treatment and prevention of schistosomiasis, cysticercosis, paragonimiasis, hydatid disease, fasciolopsiasis, hydatid disease, and worm infection. 
It can also be used as anthelmintic and is effective in treating animal gastrointestinal nematodes. It can be mixed in the feed for application. 
The product is a kind of anthelmintic drug effective in treating Schistosoma japonicum, Schistosoma mansoni and Schistosoma haematobium, Clonorchis sinensis, Paragonimus westermani, fasciolopsis buski, tapeworms and cysticercosis. It has a especially strong killing effect on tapeworm and is currently of highest efficiency among anti-schistosomiasis drug. 
It is a kind of anthelmintics drug mainly used for treating schistosomiasis. It can also used for treating Fahrenheit schistosomiasis, taeniasis, paragonimiasis, and cysticercosis
Production method. Isoquinoline has advantages such as wide sources of initial raw material and low cost. Isoquinoline can be converted to 1-benzoyl-2-cyano-1,2-dihydro-isoquinoline through Reissetr reaction. It is further converted to 1-benzoyl-aminomethyl-1, 2, 3, 4-tetrahydroisoquinoline through pressurized hydrogenation. Then followed by cyclization with chloroacetyl chloride to give 2-benzoyl-1,3, 4,6,7,11b-hexahydro-2H-pyrazino[2,1-b]isoquinolin-4-ketone. Finally, apply phosphoric acid hydrolysis and perform condensation reaction with cyclohexanecarboxylic acid chloride to obtain the final product. 
There are a variety of synthetic routes for industrial production including isoquinoline route, piperazine route,, among which the isoquinoline route is the best. In this route, first perform adduct reaction between isoquinoline and benzoyl chloride as well as potassium cyanide, further go through catalytic hydrogenation and rearrangement to generate 1-benzoyl-methyl-amino-1,2,3,4-tetrahydroisoquinoline, and then sequentially go through chlorine acetylation, cyclization, hydrolysis under increased pressure to generate the final product. 
 as the raw material, after acylation through chloroacetyl chloride, further introduce the amino group after adding terephthalamide potassium for amination reaction, then have cyclization reaction in the action of phosphorus oxychloride to give 3,4-dihydroisoquinoline derivative; further go through hydrogenation and hydrolysis to obtain 1-aminomethyl-tetrahydroquinoline; successively use cyclohexane carboxylic acid chloride and chloroacetyl chloride for acylation and finally go through dehydrochlorination and cyclization to obtain praziquantel.
You can alternatively use isoquinoline as raw material; it first go through Reissert reaction to introduce a cyano group in l position and have nitrogen benzoylated, followed by hydrogenation while benzoyl group is transferred to the amino group of the side chain, further introduce a chlorine acetyl group to the amino group on the ring, then successively go through cyclization, hydrolysis,  to obtain praziquantel.
The above information is edited by the chemicalbook of Dai Xiongfeng.
CategoryToxic substances

Category: Pharmaceutical raw material