تفاعل #2254166
ord-b05b75ab484c4a78983e6c2b23821ab4
معادلة التفاعل
acetonitrile
TAC
lactose
TAC
LAC
→
TAC LAC
المذيبات
ظروف التفاعل
درجة الحرارة
-50°CELSIUS
الظروف التفصيلية
See reaction.notes.procedure_details.
المعالجة
- 1أخرىThe compositions were prepared
- 2درجة الحرارةis cooled
- 3أخرىThe frozen compositions were then collected
- 4أخرىthe solvent was removed by lyophilization
- 5أخرىwere stored at room temperature under vacuum
الإجراء التجريبي
A formulation of tacrolimus (TAC) was produced using TAC and lactose (LAC) in ratio 1:1. The TAC:LAC 1:1 formulation was prepared using the ultra-rapid freezing (URF) process. The compositions were prepared by dissolving TAC and LAC at a 1:1 ratio and 0.75% solids in a 60/40 mixture of acetonitrile and water. The solution of drug and excipient was applied to the surface of a solid substrate, which is cooled using a cryogenic substrate maintained at −50° C. The frozen compositions were then collected and the solvent was removed by lyophilization using a VirTis Advantage Lyophilizer (VirTis Company, Inc. Gardiner, N.Y.). The dried powders were stored at room temperature under vacuum.