Lub npe tshuaj:1,3-Dimethylurea hmoov

Molecular Formula:C3H8N2O

Molecular Luj:88.11 ib

Qauv:

CAS Nr: 96-31-1

Specification

Qhov tsos: Dawb Khoom

Assay (HPLC): 95.0% min

Melting Kub: 102 ° C min N-methyluren (HPLC) 1.0% max

Dej: 0.5% max

Kev ua tau zoo thiab nta:

Pharmaceutical intermediates, kuj siv nyob rau hauv zus tau tej cov fiber kho tus neeg sawv cev.Nws yog siv nyob rau hauv cov tshuaj los ua ke theophylline, caffeine thiab nificaran hydrochloride.

Txoj kev thov:

(1) cov roj methylamine tau dhau mus rau hauv molten urea, thiab cov roj ammonia tso tawm tau nqus thiab rov qab los. Tom qab cov tshuaj tiv thaiv cov khoom yog txias, nws raug tshem tawm thiab recrystallized.

(2) cov pa roj carbon dioxide tau npaj los ntawm cov roj-cov khoom catalytic cov tshuaj tiv thaiv nrog monomethylamine.

(3) Kev tshwm sim ntawm methyl isocyanate nrog methylamine.

Ntim thiab Cia

Ntim nrog 25kg hnab, los yog Khaws cia rau hauv lub thawv qub hauv qhov chaw txias txias. Cia kom deb ntawm qhov tsis sib xws. Cov thawv uas qhib yuav tsum tau ua tib zooresealed thiab khaws cia upright kom tsis txhob to. Tsis txhob cia lub sij hawm ntev.

Sau ntawv
Cov ntaub ntawv khoom tsuas yog siv rau kev siv, kev tshawb fawb thiab kev txheeb xyuas.Peb yuav tsis ris lub luag haujlwm lossis kev tsis sib haum xeeb patent.
Yog tias koj muaj lus nug hauv kev siv lossis kev siv, thov hu rau peb hauv lub sijhawm.