摘要 |
The present invention is directed to crystalline forms of 6-[[(3S,4R)-3,4-dihydro-3-hydroxy-6-[(3-hydroxyphenyl)sulfonyl]-2,2,3-trimethyl-2H-1-benzopyran-4-yl]oxy]-2-methyl-3(2H)-pyridazinone, formulations containing at least one of these crystalline forms and their use to promote hair growth.
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