142680-85-1 Usage
Description
(25S)-25-CYCLOHEXYL-25-DE(SEC-BUTYL)-5-O-DEMETHYL-22,23-DIHYDROAVERMECTIN A1A is a complex organic compound derived from the Avermectin family, which are known for their potent antiparasitic properties. This specific compound is characterized by its unique structural features, including a cyclohexyl group at the 25th position, the absence of a sec-butyl group, and a demethylated 5-O position. These modifications contribute to its enhanced biological activity and potential applications in various fields.
Uses
Used in Pharmaceutical Industry:
(25S)-25-CYCLOHEXYL-25-DE(SEC-BUTYL)-5-O-DEMETHYL-22,23-DIHYDROAVERMECTIN A1A is used as an intermediate in the synthesis of various antiparasitic compounds. One of its key applications is in the production of 4''-O-2,6-Dideoxy-3-O-methyl-α-L-arabino-hexopyranosyl Selamectin (D440100), which is an impurity of Selamectin (S247990). Selamectin is a widely used topical parasiticide and veterinary antihelminithic agent, effective against a range of parasites in animals.
Used in Veterinary Medicine:
In the veterinary medicine industry, (25S)-25-CYCLOHEXYL-25-DE(SEC-BUTYL)-5-O-DEMETHYL-22,23-DIHYDROAVERMECTIN A1A plays a crucial role in the development of antiparasitic medications for animals. Its derivatives, such as Selamectin, are used to treat and prevent parasitic infections in pets and livestock, contributing to the overall health and well-being of animals.
Used in Research and Development:
Due to its unique structural features and potent biological activity, (25S)-25-CYCLOHEXYL-25-DE(SEC-BUTYL)-5-O-DEMETHYL-22,23-DIHYDROAVERMECTIN A1A is also utilized in research and development for the discovery of new antiparasitic agents. Scientists and researchers can use this compound as a starting point to design and synthesize novel compounds with improved efficacy, safety, and selectivity against various parasites.
Flammability and Explosibility
Nonflammable
Check Digit Verification of cas no
The CAS Registry Mumber 142680-85-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,6,8 and 0 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 142680-85:
(8*1)+(7*4)+(6*2)+(5*6)+(4*8)+(3*0)+(2*8)+(1*5)=131
131 % 10 = 1
So 142680-85-1 is a valid CAS Registry Number.
142680-85-1Relevant articles and documents
Synthesis method for high-purity selamectin
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Paragraph 0028; 0030-0032; 0039; 0041-0043, (2020/05/30)
The invention provides a synthesis method for high-purity selamectin. The synthesis method comprises the following steps: with doramectin as a raw material, subjecting the doramectin to hydrogenation,oxidation, oximation and desugaring so as to obtain a crude selamectin product, wherein an oxidation system adopted by oxidation is a manganese dioxide/Dess Martin oxidant or manganese dioxide/2-iodoylbenzoic acid. According to the invention, the use of a traditional single oxidant is broken through; the manganese dioxide/Dess Martin oxidant or the manganese dioxide/2-iodoxybenzoic acid is selected as the oxidation system; the oxidation system is mild and controllable; oxidation reaction is more thorough; reaction byproducts are few; thus, the obtained crude selamectin product is high in purity, and conditions are provided for abandoning a C18 high-pressure preparation process in a subsequent refining process. Generally speaking, the synthesis method provided by the invention is short insynthetic route, not tedious in post-treatment process and low in cost, can obtain the selamectin with a purity of 99% or above, and has high total yield.
Preparation method of selamectin
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Paragraph 0044; 0045; 0046; 0062; 0063; 0065; 0091, (2017/09/18)
The invention provides an improved preparation technology of selamectin. The improved preparation technology comprises the following steps of (1) in the presence of a Wilson catalyst, reducing the selamectin DL by hydrogen, so as to obtain an intermediate SL1; (2) desugaring the intermediate SL1 obtained in step (1) by an organic solvent hydrochloric acid solution (by dissolving hydrochloric acid gas into an organic solvent), so as to obtain an intermediate SL2; (3) oxidizing the intermediate SL2 obtained in step (2) by manganese dioxide, so as to obtain an intermediate SL3; (4) oximating the intermediate SL3 obtained in step (3) by hydroxylamine hydrochloride, so as to obtain selamectin SL; (5) recrystallizing the crude product of selamectin SL obtained in step (4) by methylbenzene, acetone and methanol, so as to obtain the purified selamectin SL.
