A method for the synthesis of specialized pro-resolving mediators, structural isomers thereof and analogs thereof is disclosed herein. The method comprises reacting a compound of the formula (I):

##STR00001## wherein R.sub.1 is alkyl.sub.(C≤12), cycloalkyl.sub.(C≤12), alkenyl.sub.(C≤12), alkylidene.sub.(C≤12), alkynyl.sub.(C≤12), aryl, aralkyl, heteroaryl or heteroaralkyl; and X.sub.1, X.sub.2 and X.sub.3 are each independently hydroxy or OP, wherein P is a hydroxy protecting or hydroxy activating group; with a reducing agent under conditions sufficient to produce a compound of the formula (II):

##STR00002## wherein: R.sub.1, X.sub.1, X.sub.2 and X.sub.3 are as defined above.

Novel protectins, more specifically novel structural isomers and analogs of PD1 and PDX are also disclosed.

The present invention includes crystalline forms of (2S,3S)-2-amino-3-methyl-N-(2-morpholinoethyl)-pentanamide and salts thereof. Furthermore, the present invention provides compositions comprising the crystalline forms and therapeutic uses of the crystalline forms.

The present invention includes crystalline forms of (2S,3S)-2-amino-3-methyl-N-(2-morpholinoethyl)-pentanamide and salts thereof. Furthermore, the present invention provides compositions comprising the crystalline forms and therapeutic uses of the crystalline forms.

Compounds represented by formulae I, II, III, and IV including pro-drugs for treprostinil and prostacyclin analogs. Uses include treatment of pulmonary hypertension (PH) or pulmonary arterial hypertension (PAH). The structures of the compounds can be adapted to the particular application for a suitable treatment dosage. Transdermal applications can be used.

Compounds represented by formulae I, II, III, and IV including pro-drugs for treprostinil and prostacyclin analogs. Uses include treatment of pulmonary hypertension (PH) or pulmonary arterial hypertension (PAH). The structures of the compounds can be adapted to the particular application for a suitable treatment dosage. Transdermal applications can be used.

The present disclosure describes compositions, preparations, nanoparticles (such as lipid nanoparticles), and/or nanomaterials and methods of their use.

The present disclosure describes compositions, preparations, nanoparticles (such as lipid nanoparticles), and/or nanomaterials and methods of their use.

Compounds of Formula (A) and methods for use as agricultural chemicals, including herbicides.

##STR00001##

Compounds of Formula (A) and methods for use as agricultural chemicals, including herbicides.

##STR00001##

A preparation method for a halogen-substituted compound is provided, where a piperazine derivative shown in formula I reacts with a halogenated acetyl halide derivative shown in formula VI to generate a halogen-substituted compound shown in formula II. The present invention further relates to a preparation method for preparing a pyrazole derivative by using a halogen-substituted compound, where a halogen-substituted compound shown in formula II reacts with methylhydrazine to close a pyrazole ring, to generate a halogen-substituted alkyl-1-methylpyrazole derivative shown in formula IV, or reacts with methylhydrazine benzaldehyde hydrazone to generate a hydrazone compound shown in formula III, which closes, under the action of an acid, a pyrazole ring to generate a halogen-substituted alkyl-1-methylpyrazole derivative shown in formula IV. The present invention further relates to a structure of an intermediate compound. The preparation methods for a halogen-substituted compound and a pyrazole derivative are suitable for industrial production.