Vanillylmandelic Acid (VMA)
Koj hais li cas Vanillylmandelic acid?
vanillylmandelic acid (VMA) [ van-i-lil-man-del-ik] n.
VMA sawv cev rau tshuaj dab tsi?
Vanillylmandelic acid (VMA) yog ib qho ntawm cov khoom tawg (metabolite) ntawm epinephrine (adrenaline) thiab norepinephrine. Epinephrine thiab norepinephrine yog ib pawg ntawm cov tshuaj hormones zoo sib xws hu ua catecholamines.
tso zis VMA yog dab tsi?
Vanillylmandelic acid (VMA) thiab lwm yam catecholamine metabolites xws li homovanillic acid (HVA) ntsuas hauv cov zis yog siv rau kev tshuaj xyuas menyuam yaus rau catecholamine-secreting qog xws li neuroblastoma thiab lwm yam neural. crest qog thiab saib xyuas cov neeg uas tau kho cov qog no.
VMA tsim li cas?
Tshuaj synthesis
VMA synthesis yog thawj kauj ruam ntawm cov txheej txheem ob kauj ruam xyaum ua los ntawm Rhodia txij li xyoo 1970 los ua cov khoom siv vanilla. Tshwj xeeb cov tshuaj tiv thaiv entails cov condensation ntawm guaiacol thiab glyoxylic acid nyob rau hauv ib tug dej khov txias, aqueous tov nrog sodium hydroxide
