Irina Oshchepkova
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Articles
Recent activity by Irina Oshchepkova-
ChemSketch: Molfile Text Instead of Structure When Pasting from ChemSketch into Excel
DescriptionWhen copying a chemical structure from ChemSketch and pasting it into Excel, the pasted content appears as Molfile text rather than as a graphical structure.SolutionIn the ChemSketch win...
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ChemSketch: How to draw an electron pair (Lewis structure)
DescriptionLewis structures and mechanism diagrams often require lone pairs or electron pairs shown as dots. ChemSketch includes electron pair symbols in template sets such as Lewis Structures or R...
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ChemSketch: How to draw H-bonds
DescriptionHydrogen bonds are often represented as dashed or special coordinating bonds between donor and acceptor atoms. ChemSketch provides coordinating/dashed bond tools and also supports creati...
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ChemSketch: Switching Polypeptide α‑Helices from Right‑Handed to Left‑Handed
DescriptionIn peptide drawings, you may need to flip the orientation of helices or the entire chain. ChemSketch provides several flip options that can be applied to the selected structure to change...
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ChemSketch: How to draw an arrow for a null reaction in ChemSketch
DescriptionNull reactions (no reaction occurred) are often indicated using a crossed-out reaction arrow. ChemSketch doesn’t provide a built-in “null reaction” symbol, but you can easily construct o...
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ChemSketch: Drawing Molecules with Open (Terminal) Bonds in Polymer Notation
DescriptionPolymer structures are often represented with “open” ends (no explicit terminal group label), to indicate repeating units. In ChemSketch, you can simulate this by hiding terminal labels ...
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ChemSketch: How to draw structures in ChemSketch in a notation style, like NH2CH2CH2CH2OH (Condensed Formula)
DescriptionSome users prefer or require condensed formulas (e.g., NH₂CH₂CH₂CH₂OH) for teaching or documentation, instead of fully expanded skeletal or structural formulas. While ChemSketch is a str...
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ChemSketch: How to insert Greek letters and symbols into ChemSketch
DescriptionGreek letters and special symbols are often required for labels, names, and annotations (e.g., α, β, σ). ChemSketch supports these through dedicated fonts in both Structure and Draw mode...
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ChemSketch: How to convert a chemical structure between 2D and 3D formats.
DescriptionThis article covers the process of generating a 3D model from an existing 2D drawing, optimizing the structure to obtain accurate 3D geometry, and switching between 2D and 3D views durin...
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ChemSketch: What temperature is used for density prediction?
DescriptionChemSketch predicts density using an internal model that assumes a standard temperature. Understanding this assumption is important when comparing predicted densities with experimental d...