BOC-N-Methyl-L-alanine (CAS # 16948-16-6)
Risk thiab Safety
| Kev nyab xeeb piav qhia | 24/25 - Tsis txhob sib cuag nrog daim tawv nqaij thiab qhov muag. |
| WGK Germany | 3 |
| HS Code | 2924 19 00 Nws |
| Hazard Class | IRRITANT |
BOC-N-Methyl-L-alanine (CAS # 16948-16-6) Cov ntaub ntawv
| daim ntawv thov | BOC-N-methyl-L-alanine tuaj yeem siv tsis tau tsuas yog rau kev tsim cov protein, tab sis kuj yog cov tshuaj tsw qab, tshuaj tiv thaiv thiab khaws cia hauv cov khoom noj khoom haus, ua cov khoom siv raw hauv cov tshuaj thiab cov khoom siv me me hauv cov tshuaj niaj hnub. |
| kev npaj | tetrahydrofuran (80 mL) tov ntawm 1- boc-alanine (5g, 26.4 mmol) ntxiv, hmoov zoo KOH (10.4g, 187) mmol) tau ntxiv ntawm 0 ℃, thiab tom qab ntawd tetrabutylammonium bisulfate (0.5g, 10% los ntawm qhov hnyav) tau ntxiv. Tom qab ntawd, dimethyl sulfate (10 mL, 105 mmol) tau muab tso rau hauv qhov chaw qis dua 15 feeb. Do rau lwm 30 feeb thiab ntxiv dej (50 mL). Tom qab nplawm hauv chav sov li 5 teev, 20% ammonium hydroxide aqueous tov (20 mL) ntxiv. Dilute cov tshuaj tiv thaiv nrog ether (100 mL), cais cov dej txheej, thiab tshem tawm cov organic txheej nrog saturated NaHCO3 aqueous tov (2 × 40 mL). Cov txheej txheem dej sib xyaw yog acidified nrog 1M KHSO4 rau pH 1 thiab muab rho tawm nrog ethyl acetate (2 × 200 mL). Cov txheej txheem organic yog ua ke, qhuav (Na2SO4), lim thiab concentrated. Cov khoom tsim tau raug txheeb xyuas tias yog BOC-N-methyl-L-alanine. butter, tawm los 4.3g, 80%. |
Sau koj cov lus ntawm no thiab xa tuaj rau peb
