Portugal Top Sites for Chemistry

    Acs.org

    Rsc.org

    Ptable.com

    Webqc.org

    Cas.org

    Chemicalforums.com

    Iupac.org

    Chemspider.com

    Ccl.net

    Periodictable.com

    Clinchem.org

    Reaxys.com

    Chemicalize.org

    Orgsyn.org

    Organic-chemistry.org

    Lmntology.com

    Periodicvideos.com

    Chemistrystore.com

    Aoac.org

    Chemport.ru

    Chemspy.com

    Sciencemadness.org

    Ausetute.com.au

    Americanchemistry.com

    Darlingmodels.com

    Chemistry.co.nz

    Inchem.org

    Xumuk.ru

    Periodni.com

    Labchem.com

    Chemistryviews.org

    4college.co.uk

    Preparatorychemistry.com

    Chemicool.com