Crystalline diacylhydrazine and the use thereof
The present disclosure provides crystalline polymorphic and amorphous forms of (R)-3,5-dimethyl-benzoic acid N-(1-tert-butyl-butyl)-N′-(2-ethyl-3-methoxy-benzoyl)-hydrazide (Compound 1) or (S)-3,5-dimethyl-benzoic acid N-(1-tert-butyl-butyl)-N′-(2-ethyl-3-methoxy-benzoyl)-hydrazide (Compound 2). The present disclosure further provides compositions comprising crystalline polymorphic and amorphous forms of Compound 1 or Compound 2 and an excipient, methods of making crystalline polymorphic or amorphous forms of Compound 1 or Compound 2, and methods of using crystalline polymorphic or amorphous forms of Compound 1 or Compound 2 to regulate gene expression in a cell or in a subject.
1. Crystalline (R)-3,5-dimethyl-benzoic acid N-(1-tert-butyl-butyl)-N′-(2-ethyl-3-methoxy-benzoyl)-hydrazide hydrate Form IV,
characterized as having a powder x-ray diffraction pattern with peaks at 6.83, 10.31, 11.30, 12.18, 12.98, 13.69, 15.11, 16.23, 17.60, 17.99, 20.70, 21.15, 21.68, 22.71, 23.79, and 24.86 degrees 2Θ.
2. The (R)-3,5-dimethyl-benzoic acid N-(1-tert-butyl-butyl)-N′-(2-ethyl-3-methoxy-benzoyl)-hydrazide hydrate Form IV of claim 1 having an average particle size distribution of about 10 μm or less.
3. A composition comprising the (R)-3,5-dimethyl-benzoic acid N-(1-tert-butyl-butyl)-N′-(2-ethyl-3-methoxy-benzoyl)-hydrazide hydrate Form IV of claim 1 and one or more excipients.
4. The composition of claim 3 , wherein said one or more excipients comprise one or more pharmaceutically acceptable excipients.
5. The composition of claim 4 , wherein said one or more pharmaceutically acceptable excipients comprise Miglyol 812, phospholipon 90G, or tocopheryl polyethylene glycol 1000 succinate, or a mixture thereof.
6. A method of making a composition, the method comprising admixing the (R)-3,5-dimethyl-benzoic acid N-(1-tert-butyl-butyl)-N′-(2-ethyl-3-methoxy-benzoyl)-hydrazide hydrate Form IV of claim 1 and an excipient.
7. A kit comprising the (R)-3,5-dimethyl-benzoic acid N-(1-tert-butyl-butyl)-N′-(2-ethyl-3-methoxy-benzoyl)-hydrazide hydrate Form IV of claim 1 .
8. The crystalline (R)-3,5-dimethyl-benzoic acid N-(1-tert-butyl-butyl)-N′-(2-ethyl-3-methoxy-benzoyl)-hydrazide hydrate Form IV of claim 2 having an average particle size distribution of about 1 μm or less.