(±) -6-Hydroxy-2,5,7,8-tetramethylchromane-2-carboxylic acid Cas: 53188-07-1 ufa
| Nambala ya Catalog | XD90174 |
| Dzina lazogulitsa | (±) -6-Hydroxy-2,5,7,8-tetramethylchromane-2-carboxylic acid |
| CAS | 53188-07-1 |
| Molecular Formula | C14H18O4 |
| Kulemera kwa Maselo | 250.29 |
| Zambiri Zosungira | Wozungulira |
Mafotokozedwe a Zamalonda
| Maonekedwe | ufa |
| Asay | 99% |
| Kuchulukana | 1.219±0.06 g/cm3 (20 ºC 760 Torr), |
| Malo osungunuka | 187-189 ° C (kuyatsa) |
| Malo otentha | 313.42 ° C (kuyerekeza molakwika) |
| pophulikira | 171 ° C |
| Refractive index | 1.4970 (chiyerekezo) |
| Kusungunuka | Kusungunuka pang'ono (0.58 g/L) (25 ºC) |
| Kusungunuka | pang'ono madzi sungunuka |
ZOCHITIKA: Quinol dimethacrylate ndi vitamini E wosungunuka m'madzi. Mavitamini osungunuka m'madzi ndi gulu lamagulu achilengedwe omwe ndi ofunikira kwambiri kuti thupi la munthu likhalebe ndi moyo wabwino komanso limafuna zochepa.Quinol dimethacrylate ikhoza kukonzedwa kuchokera ku 1,4-dihydroxy-2,3,5-trimethylbenzene, formalin yamadzimadzi ndi methyl methacrylate ngati zoyambira.
Kukonzekera: Mu chidebe chagalasi cha 200mL chokhala ndi condenser, onjezerani 16.7g (59.1mmolCCM, kuyera kwa mankhwala: 93.5%) mu CCM yokonzedwa pamwambapa), ikani 16.7g methanol, 3.3g (82.5mmol) ya NaOH ndi 50 g madzi. , ndipo chisakanizocho chinapangidwa ndi hydrolysis ya ester pa 80 ° C pansi pa mpweya wa nayitrogeni.Muziganiza kwa ola limodzi ndi oyambitsa.The njira yothetsera ankasefedwa pa kutentha yemweyo kuchotsa insoluble kanthu, ndiyeno anawonjezera dropwise kuti acidic njira akamagwira Kusungunuka 11.7 g (85.9 mmol) wa potaziyamu hydrogen sulfate 50 g madzi pa ola limodzi.Sungani pa 80 ° C.mu chidebe cha galasi cha 300 ml chokhala ndi condenser.Pambuyo pa chithandizo cha neutralization chinatsirizidwa, makhiristo adathamanga mwamsanga pamene kugwedeza kunayimitsidwa, ndipo kusakaniza komwe kumaloledwa kunaloledwa kuyima.Makhiristo amasefedwa pa 80 ° C, kutsukidwa kawiri ndi 50 mL yamadzi, kenako kuumitsa pansi pa vacuum pa 80 ° C.Zomwe zidachitika kwa maola 24 kuti apeze 14.5 g (57.9 mmol) ya 6-hydroxy-2,5,7,8-tetramethylbenzo-2-carboxylic acid, quinodimethacrylate (yotchedwa CCA) (Zokolola: 98.3%), chiyero cha mankhwala: 99.7%).
Zochita Zachilengedwe: Trolox ndi analogi yosungunuka m'madzi ya vitamini E yokhala ndi ma antioxidant amphamvu.Trolox imakhalanso inhibitor yamphamvu ya kuwonongeka kwa membrane.
Ntchito: Antioxidant yochokera ku vitamini E yosungunuka m'madzi yokhala ndi ma free radical scavenging ndi antioxidant ntchito.
