4-Hydroxyphenylacetic acid CAS 156-38-7
4-Hydroxyphenylacetic acid yog ib qho hmoov dawb los yog daj me ntsis crystalline. Melting point 149-151 ℃. Yuav tsum tau sublimated. Yaj hauv ether, ethanol, thiab ethyl acetate. 4-Hydroxyphenylacetic acid muaj qhov hnyav molecular ntawm 152.15. Melting point 149-151 ℃. Yuav tsum tau sublimated.
| Khoom | Cov Lus Qhia Tshwj Xeeb |
| Kub taw tes | 234.6°C (kwv yees li qub) |
| Qhov Ceev | 1.2143 (kwv yees li qub) |
| Qhov kub yaj | 148-151 ° C (lit.) |
| Kev cuam tshuam ntawm qhov ci ntsa iab | 1.4945 (kwv yees) |
| Cov xwm txheej cia khoom | Huab cua tsis muaj zog |
| pKa | 4.50 ± 0.10 (Kwv yees) |
Kev tsim cov organic ntawm 4-hydroxyphenylacetic acid. Cov tshuaj intermediates organic synthesis yog siv rau kev tsim cov β - receptor blocker atenolol thiab cov khoom xyaw nquag ntawm Pueraria lobata daidzein -4,7-dihydroxyflavone; 4-Hydroxyphenylacetic acid kuj tseem siv tau ua cov tshuaj tua kab nruab nrab. Cov tshuaj reaction acylation rau cov tshuaj phenolic thiab cov tshuaj amine.
Feem ntau ntim rau hauv 25kg / nruas, thiab kuj tuaj yeem ua pob khoom raws li koj xav tau.
4-Hydroxyphenylacetic acid CAS 156-38-7
4-Hydroxyphenylacetic acid CAS 156-38-7
