(±) -6-Hydroxy-2,5,7,8-tetramethylchromane-2-carboxylic acid Cas:53188-07-1 upfu
| Catalog Number | XD90174 |
| Product Name | (±) -6-Hydroxy-2,5,7,8-tetramethylchromane-2-carboxylic acid |
| CAS | 53188-07-1 |
| Molecular Formula | C14H18O4 |
| Molecular Weight | 250.29 |
| Storage Details | Ambient |
Chigadzirwa Specification
| Chitarisiko | upfu |
| Assay | 99% |
| Density | 1.219±0.06 g/cm3 (20 ºC 760 Torr), |
| Melting point | 187-189 °C (lit.) |
| Boiling point | 313.42°C (yakaomarara fungidziro) |
| Flash point | 171°C |
| Refractive index | 1.4970 (kufungidzira) |
| Solubility | Kunyanya kunyungudika zvishoma (0.58 g/L) (25 ºC) |
| Solubility | mvura inonyungudika zvishoma |
MASHOKO ANOBATA: Quinol dimethacrylate ivhitamini E inonyungudika mumvura. Mavhitamini anonyungudika mumvura ikirasi yemakomboni akakosha kuchengetedza mabasa ehupenyu akajairika emuviri wemunhu uye anoda zvishoma.Quinol dimethacrylate inogona kugadzirwa kubva ku1,4-dihydroxy-2,3,5-trimethylbenzene, aqueous formalin uye methyl methacrylate sezvinhu zvekutanga.
Kugadzirira: Muchigaba chegirazi che200mL chine condenser, wedzera 16.7g (59.1mmolCCM, kuchena kwemakemikari: 93.5%) muCCM yakagadzirwa pamusoro), isa 16.7g methanol, 3.3g (82.5mmol) yeNaOH uye 50 g yemvura. , uye musanganiswa wacho wakaiswa pasi pe hydrolysis ye ester pa 80 ° C pasi pe nitrogen atmosphere.Kurudzira kweawa imwe nekukurudzira.Mhinduro yemhinduro yakasefa patembiricha imwe chete kuti ibvise chinhu chisinganyungudika, yobva yawedzera kudonha kune acidic mhinduro inowanikwa nekunyungudutsa 11.7 g (85.9 mmol) ye potassium hydrogen sulfate mu50 g yemvura kweawa imwe.Ramba uri pa80°C.mumudziyo wegirazi we300 ml wakaiswa condenser.Mushure mekunge kurapwa kwe neutralization kwapera, makristasi akadonha pakarepo apo kubvongodza kwakamira, uye musanganiswa wekuita wakabvumirwa kumira.Makristasi acho akasefa pa80 ° C, akagezwa kaviri ne50 mL yemvura, ndokuzoomeswa pasi pevacuum pa80 ° C.Maitiro akaitwa kwemaawa makumi maviri nemana kuwana 14.5 g (57.9 mmol) ye6-hydroxy-2,5,7,8-tetramethylbenzo-2-carboxylic acid, quinodimethacrylate (inozonzi CCA) (Goho: 98.3%), kuchena kwemakemikari: 99.7%).
Biological Chiitiko: Trolox imvura-inonyungudika analog yevhitamini E ine simba antioxidant zvivakwa.Trolox zvakare inhibitor ine simba yekukuvadza membrane.
Zvishandiso: Antioxidant inotorwa kubva mumvura-inonyungudika vhitamini E ine mahara radical scavenging uye antioxidant chiitiko.
