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  2. N-Methyl-2-pyrrolidone - Wikipedia

    en.wikipedia.org/wiki/N-Methyl-2-pyrrolidone

    N-Methyl-2-pyrrolidone (NMP) is an organic compound consisting of a 5-membered lactam. It is a colorless liquid, although impure samples can appear yellow. It is miscible with water and with most common organic solvents. It also belongs to the class of dipolar aprotic solvents such as dimethylformamide and dimethyl sulfoxide.

  3. 2-Pyrrolidone - Wikipedia

    en.wikipedia.org/wiki/2-Pyrrolidone

    2-Pyrrolidone, also known as 2-pyrrolidinone or butyrolactam, is an organic compound consisting of a 5-membered lactam, making it the simplest γ-lactam. It is a colorless liquid that is miscible with water and most common organic solvents.

  4. Pyrrolidine - Wikipedia

    en.wikipedia.org/wiki/Pyrrolidine

    Pyrrolidine, also known as tetrahydropyrrole, is an organic compound with the molecular formula (CH 2) 4 NH. It is a cyclic secondary amine , also classified as a saturated heterocycle . It is a colourless liquid that is miscible with water and most organic solvents.

  5. N-Vinylpyrrolidone - Wikipedia

    en.wikipedia.org/wiki/N-Vinylpyrrolidone

    N-Vinylpyrrolidone (NVP) is an organic compound consisting of a 5-membered lactam ring linked to a (2 carbon) vinyl group. It is a colorless liquid although commercial samples can appear yellowish. It is produced industrially by vinylation of 2-pyrrolidone, i.e. the base-catalyzed reaction with acetylene. [2]

  6. Pyrrolidine alkaloids - Wikipedia

    en.wikipedia.org/wiki/Pyrrolidine_alkaloids

    Among the most important representatives of the pyrrolidine alkaloids are hygrin and cuscohygrin. [2] Another representative is the (-)- codonopsinine . [ 3 ] Furthermore, ruspolinone , norruspolinone and norruspoline also belong to this alkaloid group.

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  8. 2-Pyridone - Wikipedia

    en.wikipedia.org/wiki/2-Pyridone

    In the solid state the dimeric form is not present; the 2-pyridones form a helical structure over hydrogen bonds. Some substituted 2-pyridones form the dimer in solid state, for example the 5-methyl-3-carbonitrile-2-pyridone. The determination of all these structures was done by X-ray crystallography. In the solid state the hydrogen is located ...

  9. Lead Paint Violations In New York City Neighborhoods

    projects.huffingtonpost.com/lead-paint-nyc/database

    The data represents instances where HPD officials sent landlords a "notice of violation" between Nov. 18, 2013, and Jan. 1, 2016, requiring them to correct a lead paint hazard. The status of violations presented on this map may have changed since it was published. The data excludes public housing, units managed by The New York City Housing ...