3, 4-Dihydroxybenzoic Acid 99-50-3

1 Kev Taw Qhia

3, 4-Dihydroxybenzoic acid, cov mis mos molecular yog C7H6O4, dawb mus rau me ntsis xim av koob zoo li crystals. Melting point yog txog 200 degree (decomposition). Nws yog soluble hauv dej kub, ethanol thiab ether, me ntsis soluble hauv dej txias, thiab insoluble hauv benzene. Decomposes nyob rau hauv boiling dej thiab emissions carbon dioxide. Cov tshuaj aqueous yog ntsuab thaum nws ntsib ferric chloride, thiab tsaus liab thaum nws ntsib sodium bicarbonate. Siv raws li dyes, tshuaj intermediates, analytical reagents (kuaj hlau).

2 Muaj nuj nqi

Dawb mus rau me ntsis xim av koob zoo li muaju. Melting point yog txog 200 degree (decomposition). Nws yog soluble hauv dej kub, ethanol thiab ether, me ntsis soluble hauv dej txias, thiab insoluble hauv benzene. Decomposes nyob rau hauv boiling dej thiab emissions carbon dioxide. Cov tshuaj aqueous yog ntsuab thaum nws ntsib ferric chloride, thiab tsaus liab thaum nws ntsib sodium bicarbonate.

1. Tsis txhob sib cuag nrog cov muaj zog oxidants thiab alkalis.

2. Muaj nyob rau hauv cov tshuaj tua kab mob flue-kho, nplooj burley luam yeeb, nplooj oriental luam yeeb thiab pa luam yeeb.

Nws tsis tsuas yog txo qis myocardial oxygen noj, txhim kho myocardial oxygen kam rau ua, ua rau lub plawv dhia qeeb thiab lwm yam teebmeem tshuaj, tab sis kuj muaj cov nyhuv anti HBV.

3 Daim ntawv thov

3, 4-Dihydroxybenzoic acid muaj cov tshuaj tua kab mob. Kev kuaj hauv vitro muaj ntau qib ntawm cov kab mob tua kab mob ntawm Pseudomonas aeruginosa, Escherichia coli, Typhoid bacillus, Shigella, Alcaligenes, Bacillus subtilis thiab Staphylococcus aureus.

4 Tus Qauv Zoo

5 Flow Chart

6 NMR

7.MOA

[txoj kev kuaj pom] HPLC Ntau dua lossis sib npaug li 98 feem pua

[pob specification] 1kg, 5kg, 10kg / chim, 25kg / chim (tuaj yeem ntim raws li cov neeg siv khoom xav tau)

[tus cwj pwm] cov khoom no yog dawb crystalline hmoov

[extraction source] cov khoom no yog nplooj ntawm Stenoloma chusanum (L.) Ching

[pharmacological zog] lub melting point yog hais txog 200C (decomposition). Soluble hauv dej kub, ethanol, ether thiab acetone, me ntsis soluble hauv dej txias, me ntsis soluble hauv benzene thiab chloroform, insoluble hauv roj av ether. Decompose nyob rau hauv boiling dej thiab tso carbon dioxide. Cov tshuaj aqueous yog ntsuab nyob rau hauv lub xub ntiag ntawm ferric chloride Tsaus liab nyob rau hauv cov ntaub ntawv ntawm sodium bicarbonate..

[Nrhiav txoj kev] nrhiav kom tau txoj kev ntawm protocatechuic acid (HPLC)

Dissolve 10mg ntawm acetic acid (1: 3 ntawm methanol) nyob rau hauv ib lub hwj thiab hnyav kom raug.

Raws li HPLC txoj kev, qhov ntsuas wavelength tau teem rau ntawm 254 nm thiab tus nqi ntws yog 0.5m / min

Siv cov tshuaj ntsuam xyuas 20 μ 1 txhaj rau hauv qhov kev ua haujlwm siab ua kua chromatograph, sau cov spectrum mus rau 2.5 npaug ntawm lub sijhawm khaws cia ntawm lub ntsiab ncov [txoj kev khaws cia] 2-8 degree C, thiab khaws cia rau hauv qhov chaw txias thiab qhuav kom deb ntawm teeb.

8 Kev Tsim Nyog

Tom qab xyoo ntawm kev tsim khoom, peb lub tuam txhab tau txais cov ntawv tso cai tsim khoom tsim nyog.

9 Tus khub

Peb muaj ntau tus neeg koom tes mus sij hawm ntev thoob plaws ntiaj teb.

10 Cov neeg siv khoom xyuas

Peb tau txais kev qhuas ntau ntawm lwm lub platform, thiab peb cov neeg siv khoom tau zoo siab heev ntawm cov khoom tsim los ntawm peb lub tuam txhab.

11 Exhibition

Peb lub tuam txhab koom nrog ntau yam kev nthuav qhia hauv tsev thiab txawv teb chaws txhua xyoo, thiab sib txuas lus nrog cov neeg siv khoom ntsej muag.

Cim npe nrov: 3, 4-dihydroxybenzoic acid 99-50-3, manufacturers, lwm tus neeg, Hoobkas, lag luam wholesale, yuav, nqe, zoo tshaj plaws, tej, kev muag khoom