6-bromopyridine-2-carboxylic acid methyl ester (CAS # 26218-75-7)
Hazard Cov Cim | Xi-xaj |
Risk Codes | R37/38 - Kab mob ua pa thiab tawv nqaij. R41 - Riam phom loj rau qhov muag |
Kev nyab xeeb piav qhia | S26 - Thaum sib cuag nrog lub qhov muag, yaug tam sim ntawd nrog dej txaus thiab nrhiav kev kho mob. S39 - Hnav qhov muag / ntsej muag tiv thaiv. |
WGK Germany | 3 |
HS Code | 293339 0 |
Kev Ceeb Toom | Teeb meem / Irritant / Cia txias |
Taw qhia
Methyl yog ib qho organic compound nrog cov khoom hauv qab no:
1. Cov tsos: Nws yog xim tsis muaj xim rau lub teeb daj.
2. Cov mis mos molecular: C8H7BrNO2.
3. Molecular Luj: 216.05g/mol.
4. Solubility: Nws yog soluble hauv organic solvents xws li ethanol thiab dichloromethane, insoluble hauv dej.
5. Melting Point: txog 26-28 ℃.
Nws cov kev siv tseem ceeb suav nrog:
1. Organic Synthesis: Methyl feem ntau yog siv los ua cov organic synthesis intermediate rau cov synthesis ntawm ntau yam organic tebchaw.
2. Kev tshawb fawb tshuaj tua kab: Nws kuj yog siv rau hauv kev tshawb fawb tshuaj tua kab ua cov khoom siv ua ntej rau cov tshuaj tua kab.
Txoj kev:
Methyl L tuaj yeem npaj tau los ntawm cov kauj ruam hauv qab no:
1. Ua ntej, 2-picolinic acid (Pyridine-2-carboxylic acid) yog reacted nrog methylisium bromide (methyllitium) los tsim 2-methyl-pyridine (Methyl pyridine-2-carboxylate).
2. Tom qab ntawd, 2-Methyl formate pyridine yog reacted nrog brominated sulfoxide (Sulfuryl bromide) kom tau methyl.
Cov ntaub ntawv kev nyab xeeb:
1. Kev khaws cia ntawm Methyl L yuav tsum tau nqa tawm hauv qhov chaw uas muaj cua zoo, tsis txhob raug tshav ntuj ncaj qha.
2. Thaum siv, yuav tsum hnav hnab looj tes thiab tsom iav tiv thaiv, tsis txhob kov ncaj qha rau ntawm daim tawv nqaij thiab qhov muag.
3. Nyob rau hauv tus txheej txheem ntawm manipulation yuav tsum tsis txhob nqus ntawm nws vapor, yuav tsum tau ua hauj lwm nyob rau hauv ib tug zoo-ventilated kuaj mob.
4. Nyob rau hauv rooj plaub ntawm kev sib chwv los yog nqus tau pa, yaug tam sim ntawd nrog dej txaus thiab nrhiav kev kho mob.