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Amprolium Hydrochloride CAS 137-88-2 Amprolium HCl

Place of Origin: Zhejiang,China (Mainland)
CAS: 137-88-2
Molecular formula: C14H20Cl2N4
Safety Description: S22:; S24/25:;
Molecular weight: 315.2456
Appearance: White powder
EINECS: 205-307-5
  • 137-88-2


  • 137-88-2

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Amprolium Hydrochloride 137-88-2

Amprolium Hydrochloride

CAS 137-88-2

Amprolium (INN, trade names Amprovine, Amprolium, Amprol, Anticoccid) is a coccidiostat used in poultry.The drug is a thiamine analogue and blocks the thiamine transporter of Eimeria species. By blocking thiamine uptake it prevents carbohydrate synthesis.Traditional anticoccidial medicine. Effect, residual less, but is contraindicated in laying hens.

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Amproline hydrochloride is an acidic white powder, which can competitively inhibit the uptake of thiamine by coccidia, thereby inhibiting the development of coccidia. It is mainly used for the prevention and treatment of chicken coccidia, but it is not allowed to be used in laying hens, and it can also be used in mink, cattle and sheep.

Amproline has a chemical structure similar to thiamine. It is a traditionally used anticoccidial drug with a good anticoccidial effect and is still widely used in countries all over the world.

Amproline can competitively inhibit the uptake of thiamine by coccidia. In the cell, thiamine is synthesized into thiamine pyrophosphate, which participates in the oxidative decarboxylation reaction of α-keto acid in the process of sugar metabolism, which is α-keto acid. The coenzyme in the dehydrogenase system, because amproline lacks the hydroxyethyl group of thiamine, cannot be pyrophosphorylated, so that many reactions cannot proceed, hindering the carbohydrate metabolism process in the body cells, and inhibiting the development of coccidia .

The peak period of amprolin on chicken coccidia is to prevent the first generation of schizonts from forming merozoites. In addition, it also inhibits the coccidia's sexual cycle and oocysts formed by spores.



(1) Poultry Amproline has the strongest effect on chicken tender and Eimeria acerola, but it has a slightly worse effect on poisonous, Brinell, giant, and mild Eimeria. Usually the therapeutic concentration does not completely inhibit the production of oocysts. Therefore, at home and abroad, it is often used in combination with ethoxyamide benzyl and sulfaquinoxaline to enhance the efficacy.

Amproline's inhibitory effect on the body's coccidial immunity is not obvious.

The 120mg/L drinking water concentration can effectively prevent and treat turkey coccidiosis.

(2) Cattle and sheep Amprolin has a good preventive effect on Eimeria in calves and Eimeria in lambs. For lamb coccidia, the daily dose of 55mg/kg can be used continuously for 14-19 days. For calf coccidiosis, use 5 mg/kg daily for 21 days for prevention, and 10 mg/kg daily for treatment for 5 days.

For the isosporosis of mink, drinking water at a concentration of 120mg/L for 30 days can effectively prevent the discharge of oocysts.



Take the intermediate for the production of vitamin B1 as a raw material, undergo cyclization, hydrolysis and ring opening, and then diazotize to convert the amino group into a hydroxyl group, which is prepared by condensation reaction.


Medicine interactions

Since the structure of amproline is similar to thiamine, it can produce a competitive antagonistic effect. If the concentration of amproline is too high, it can cause thiamine deficiency and polyneuritis in chickens. Even if thiamine is added, the chickens can recover. , But obviously affect the anti-coccidial activity of amprofen. It is said that when the content of thiamine in each kilogram of feed exceeds 10 mg, the anti-coccidial effect of chlorpropion begins to weaken.

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