Trimethoprim Cas: 738-70-5
Lambarka buugaagta | XD92385 |
Magaca Alaabta | Trimethoprim |
CAS | 738-70-5 |
Qaabka molecularla | C14H18N4O3 |
Miisaanka Molecular | 290.32 |
Faahfaahinta Kaydinta | 2-8°C |
Xeerka Tarifka La Iswaafajiyay | 29335995 |
Tilmaamaha Alaabta
Muuqashada | Budo cad oo cad ama huruud ah |
Asay | 99% min |
Meesha dhalaalaysa | 199 - 203 Deg C |
Biraha culus | ≤20pm |
Khasaare xagga qallajinta | ≤1.0% |
Walxaha laxidhiidha | ≤0.2% |
Solubility | Aad u yar oo biyo ku milmay, wax yar oo khamriga ku milmaya, ficil ahaan aan lagu milmi karin ether |
Trimethoprim waa lipophilic iyo wakiilka bacteriostatic fasalka pyrimethamine alkaline daciif ah.Waa budo crystalline cad ama ku dhawaad cad, aan ur lahayn, qadhaadh, oo wax yar ku milmi kara chloroform, ethanol ama acetone, laakiin ku dhawaad aan lagu milmi karin biyaha oo aad ugu milmi kara dareeraha glacial acetic acid.Waxay leedahay spectrum bakteeriyada bakteeriyada taas oo la mid ah daawooyinka sulfa, laakiin leh saameyn bakteeriyada xooggan.Waxay saameyn wanaagsan ku leedahay daaweynta Escherichia coli, Proteus mirabilis, Klebsiella pneumoniae, Staphylococcus saprophyticus, iyo noocyo kala duwan oo bakteeriyada garaam-positive iyo taban.Laakin waxtar uma laha caabuqa Pseudomonas aeruginosa.Xakamaynta ugu yar ee xakamaynta ayaa inta badan ka yar 10 mg / L iyada oo la isticmaalayo kaligiis ay fududahay in ay keento caabbinta bakteeriyada, sidaas awgeed guud ahaan lama isticmaalo kaligeed, oo inta badan lagu daro daawada sulfa si loo sameeyo diyaarinta isku dhafan ee daaweynta caabuqa kaadida, mindhicirka. caabuqyada, caabuqyada neef-mareenka, shuban-biyoodka, enteritis, qandhada tiifowga, qoorgooyaha, otitis media, qoorgooyaha, sepsis iyo caabuqyada unugyada jilicsan.Waxay saameyn ku leedahay daaweynta tiifowga iyo saameynta paratyphoid oo aan ka yarayn ampicillin;Waxa kale oo lagu dari karaa dawooyinka sulfa ee shaqaynaysa muddada dheer ee ka hortagga iyo daawaynta duumada falciparum u adkaysata daawada.
Mabda'a aasaasiga ah ee ka-hortagga bakteeriyada trimethoprim waa in la farageliyo dheef-shiid kiimikaadka folate ee bakteeriyada.Habka ugu muhiimsan ee ficilku waa xakamaynta xulashada ee dhaqdhaqaaqa dihydrofolate reductase ee bakteeriyada si dihydrofolate aan loo yarayn karin tetrahydrofolate.Maaddaama isku-dhafka folic acid uu yahay qaybta ugu muhiimsan ee biosynthesis aashitada nucleic, sidaas darteed badeecadu waxay ka hortagtaa asiidhyada nucleic-ka bakteeriyada iyo borotiinnada.Waxaa intaa dheer, isku xirnaanta trimethoprim (TMP) ee bakteeriyada dihydrofolate reductase enzyme waxay shan jeer ka xoog badan tahay tan naasleyda dihydrofolate reductase.Isku darka ka dhexeeya iyada oo leh dawooyinka sulfa waxay sababi kartaa xannibaad laba geesood ah oo ku yimaada dheef-shiid kiimikaadka folic acid biosynthesis ee bakteeriyada si ay u jirto saameyn isku mid ah taas oo kor u qaadi doonta waxqabadka bakteeriyada ee daawooyinka sulfa, waxayna u rogi kartaa saameynta bakteeriyada si saameyn bakteeriyada taasoo yareyneysa daawada u adkaysata. nuucyada.Intaa waxaa dheer, alaabtu waxay sidoo kale kor u qaadi kartaa saameynta bakteeriyada kala duwan ee antibiyootiga kale (sida tetracycline, gentamicin).