ChemSpider has been updated with additional advanced filtering options (e.g. log P, density, rule of fives violations, etc.). Also a minor UI tweaks and bugfixes.

A new addition to the mobile science site 3D Molecules Edit & Test,

FEATURES:

• Building molecule model of any organic or inorganic compound using most of periodic table elements.
• “Test yourself” mode to build the target chemical compounds.
• Support of single, double and triple bonds.
• Building molecule models of cyclic compounds.
• Hints which provide information about what's going wrong with the builded molecule.
• Visualization of Wireframe style, Stick style, Ball and Stick, Spacefill (CPK) models.
• Visualization of atomic orbitals and electron effects.
• T-shaped and «seesaw» molecular geometries support.
• Availability of information about the bond length and chemical element symbols in the molecule.
• Bond-angle optimization.
• Saving and sending the created model by e-mail.
• Loading, editing and saving molecule in SDF file format.
• Loading, editing and saving molecule in PDB file format.
• Creating, sending and opening molecule verification file.
• Export to VRML format for builded molecule.
• Opening the molecule file attachments directly from Mail.
• Opening and saving created molecules in cloud services and third-party applications.