| Search by structure |
| Please follow the instructions below to draw sructure and tell us other related information. Our sales will contact you soon when we receive it. |
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| 1.Use the software by clicking here to draw molecules(The software may take a few seconds to load, please wait for a moment) |
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2.After you finish, press the icon  on the top left corner, then a new window called "SMILES" will pop up on the bottom taskbar as below |
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3.Press "SMILES",you will see some code which is just the corresponding code to the molecule you drew, copy this code  |
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| 4.Paste the code into the email with your required quantity and spec, and send them all to the address contact@watson-int.com. We will answer you soon |
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Keyboard Shortcuts |
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ESC |
Returns to the standard editing state (carbon, single bond) |
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| To find a molecule which consists of more than 2 molecules such as Salt compounds, chelate compounds and etc., draw a part of molecule, click the NEW button, then draw another molecule. Recommend to use a Substructure Search button. |
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For the following functions, press the appropriate key on the keyboard and click the point in the structure where you want to add the atom selected. |
| atoms
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C, N, O, P, S, F, I, H correspond to each of the atom labels. L corresponds to Cl and B corresponds to Br. |
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| Switches to eraser mode (click to atoms or bonds to delete them) |
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| Deletes functional groups - choose this option and then click the bond connecting the group with the main skeleton |
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bonds
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- for single bond, = for double bond |
| rings
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3..9 for 3 to 9 membered rings, Ph is 1, furyl 0 |
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| Atomic charges may be changed by the +/- button |
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groups
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a - COOH, e - C C , ft - CF3, t - tert. butyl, y - NO2, z - SO2NH2 |
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| "Non-organic" atoms or atoms with nonstandard valence may be entered with help of X button by specifying atomic SMILES (without [] brackets, i.e. Si, Fe++, NH3+) |
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 Molecule may be moved by clicking mouse close to object and dragging it to where you want it placed.
To Rotate Molecule - click mouse close to object and drag while pressing the Shift key at the same time. |
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