(±) -6-Hydroxy-2,5,7,8-tetramethylchromane-2-carboxylic acid Cas: 53188-07-1 powder
| Inombolo Yekhathalogu | XD90174 |
| Igama lemveliso | (±) -6-Hydroxy-2,5,7,8-tetramethylchromane-2-carboxylic acid |
| CAS | 53188-07-1 |
| Ifomula yeemolekyuli | C14H18O4 |
| Ubunzima beMolekyuli | 250.29 |
| Iinkcukacha zokuGcina | I-Ambient |
Ukucaciswa kweMveliso
| Imbonakalo | umgubo |
| uAsay | 99% |
| Ukuxinana | 1.219±0.06 g/cm3 (20 ºC 760 Torr), |
| Indawo yokunyibilika | 187-189 °C (isibane.) |
| Indawo yokubilisa | 313.42°C (uqikelelo olurhabaxa) |
| Indawo yokuflasha | 171°C |
| Isalathiso sokuqhafaza | 1.4970 (uqikelelo) |
| Ukunyibilika | Kancinci kakhulu ukunyibilika (0.58 g/L) (25 ºC) |
| Ukunyibilika | kancinane ukunyibilika kwamanzi |
AMAGQABANTSHINTSHI: I-Quinol dimethacrylate yivithamin E enyibilikayo emanzini. Iivithamini ezinyibilikayo emanzini zididi lwekhompawundi eziphilayo eziyimfuneko ekugcineni imisebenzi eqhelekileyo yobomi bomzimba womntu kwaye zifuna kancinci.I-Quinol dimethacrylate ingalungiswa ukusuka kwi-1,4-dihydroxy-2,3,5-trimethylbenzene, i-formalin yamanzi kunye ne-methyl methacrylate njengezinto zokuqala.
Ukulungiselela: Kwisitya seglasi se-200mL esixhotywe nge-condenser, yongeza i-16.7g (59.1mmolCCM, ukucoceka kweekhemikhali: 93.5%) kwi-CCM elungiselelwe ngasentla), faka i-16.7g methanol, 3.3g (82.5mmol) ye-NaOH kunye ne-50 g yamanzi. , kwaye umxube wawuphantsi kwe-hydrolysis ye-ester kwi-80 °C phantsi kwe-nitrogen emoyeni.Gcoba iyure enye ngokuvuselela.Isisombululo sokusabela sahluzwa kubushushu obufanayo ukuze sisuse into enganyibilikiyo, size songezelelwe kwisisombululo esineasidi esifunyenwe ngokunyibilikisa i-11.7 g (85.9 mmol) ye-potassium hydrogen sulfate kwi-50 g yamanzi kwiyure enye.Gcina ku-80°C.kwi-container ye-300 ml yeglasi efakwe kwi-condenser.Emva kokuba unyango lwe-neutralization lugqityiwe, i-crystals yancipha ngokukhawuleza xa ukuvuselela kumisiwe, kwaye umxube wokuphendula wavunyelwa ukuba ume.Iikristale zahluzwa kwi-80 ° C, zihlanjwe kabini nge-50 mL yamanzi, kwaye zomiswe phantsi kwe-vacuum kwi-80 ° C.Ukusabela kuqhutywe iiyure ezingama-24 ukufumana i-14.5 g (57.9 mmol) ye-6-hydroxy-2,5,7,8-tetramethylbenzo-2-carboxylic acid, i-quinodimethacrylate (emva koku kuthiwa yiCCA) (Isivuno: 98.3%), ukucoceka kweekhemikhali: 99,7%).
Umsebenzi we-Biological: I-Trolox yi-analog yamanzi e-soluble ye-vitamin E eneempawu ezinamandla ze-antioxidant.I-Trolox nayo iyi-inhibitor enamandla yomonakalo we-membrane.
Ukusetyenziswa: I-antioxidant ephuma kwi-vitamin E e-soluble yamanzi kunye ne-free radical scavenging kunye nomsebenzi we-antioxidant.
