L-Asparagine synthesis
- Product Name:L-Asparagine
- CAS Number:70-47-3
- Molecular formula:C4H8N2O3
- Molecular Weight:132.12
16856-13-6
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$7.00/10g
70-47-3
571 suppliers
$6.00/10g
Yield:70-47-3 75%
Reaction Conditions:
with ammonium hydroxide at 30; under 750.075 Torr; for 9 h;Reagent/catalyst;Temperature;Pressure;
Steps:
1-3; 1; 2
Step 4, acylation reaction: 3000 kg of L-aspartic acid methyl ester hydrochloride obtained in the third step is put into the reaction kettle, and then 1700 kg of 30% ammonia water is pumped into the reaction kettle, and then reacted at 0.1 MPa and 30 ° C for 9 hours. L-asparagine is obtained.Step 5, re-distillation: distilling the material obtained in the fourth step under normal pressure at 30 ° C, distilling off excess ammonia and water, and applying ammonia water to obtain a crystallization yield of L-aspartic acid amine of 75%.Step 6: recrystallization: the L-aspartic acid amine crystal obtained by the step 5 distillation is centrifuged at 6000 r/min for 40 minutes to obtain a finished product of L-asparagine.The effective content of L-asparagine is 85%.The water content is 18%.
References:
CN109678740,2019,A Location in patent:Page/Page column 4-6
71989-16-7
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70-47-3
571 suppliers
$6.00/10g
7536-55-2
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$7.00/10g
70-47-3
571 suppliers
$6.00/10g
4033-40-3
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$39.20/1G
70-47-3
571 suppliers
$6.00/10g
