4-Acetamidobenzoic Acid CAS 556-08-1

Khoom Qhia:

Khoom Siv Lub Npe: 4-Acetamidobenzoic acid TSIS TSIS: 556-08-1

Txhais:

N-ACETYL-PABA;

para-acetamidobenzoic acid;

p-Acetylamino benzoic acid;

N-acetyl-4-aminobenzoic acid;

Tshuaj& Cov Khoom Uas Lub Cev:

Zog: cov hmoov dawb dawb dawb-dawb

Ntsuas: ≥99.0%

Qhov ceev: 1.326g / cm3

Lub Ntsiab Kub: 439.6 ℃ ntawm 760 mmHg

Flash Point: 219.7 ℃

Melting point: 255-262 ℃

Acedoben (4-acetamidobenzoic acid) yog cov tshuaj sib txuas nrog cov qauv tshuaj molecular ntawm C9H9NO3. Nws yog cov acetyl derivative ntawm para-aminobenzoic acid (PABA).

Acedoben yog kev tivthaiv rau qee yam kev npaj tshuaj suav nrog suav nrog inosine pranobex.

Txoj Kev 1: Siv p-aminobenzoic acid ua raw khoom thiab muab nws los ntawm acetylation. Dissolve p-aminobenzoic acid nyob rau hauv ethyl acetate, ntxiv acetic anhydride nrog nplawm, thiab nce qhov kub kom txog 70 ° C. Tom qab ntawd nws txias thiab lim, ntxuav ob zaug nrog dej, thiab tom qab ntawd crystallized nrog ethanol kom tau cov khoom tiav.

Txoj Kev 2: Siv p-toluidine ua cov khoom siv raw, nws tau txais los ntawm acetylation thiab oxidation. Acetate tseem siv los ua cov khoom siv rau acetylation, thiab potassium permanganate siv rau oxidation, thiab oxidation kub yog 60-70 ℃.

Yog tias koj txaus siab rau peb cov khoom lossis muaj lus nug, thov koj xav tiv tauj peb!

Cov khoom lag luam hauv qab patent yog muab rau R& D lub hom phiaj nkaus xwb. Txawm li cas los xij, lub luag haujlwm kawg tau txiav txim siab nrog cov neeg yuav khoom.

Cim npe nrov: 4-acetamidobenzoic acid cas 556-08-1, tuam ntxhab, lwm tus neeg, Hoobkas, yuav, hauv Tshuag

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