ChemPencil

Name: ChemPencil
Price: 9.99 USD
Author: Code Maker Inc.

2D chemical structure editor

Only for Mac

$9.99

Age Rating

4+
Years
Category

Productivity
Developer

Code Maker Inc.
Language

EN
English
Size

126.2
MB

Mac

Draw molecules and reactions in a fast, native editor. Correct stereochemistry, standard InChI and SMILES, properties, stoichiometry and 3-D viewing built in. ChemPencil is a fast, native Mac scientific 2D chemical structure editor for chemists, students, and educators. Sketch molecules the way you think about them, work with real chemistry data — not just pretty pictures — and move files freely between the tools you and your collaborators already use. DRAWING • Single, double, and triple bonds with left/right/center alignment • Wedge, hashed, wavy, bold, and dashed stereo bonds • Ring palette: 3- to 8-membered rings, benzene, cyclopentadiene, cyclohexane chairs • Reaction arrows (forward, equilibrium, retrosynthetic) with conditions above and below the shaft • Curved mechanism arrows (double-barbed and fishhook) • Brackets (square, round, curly), text labels, formal charges, isotopes, highlights, and element coloring • "Magic Hotkeys" for fast atom and bond editing without switching tools CHEMISTRY, NOT JUST GRAPHICS • Implicit hydrogens with live valence and over-valence checking • Calculated properties: formula, MW, monoisotopic mass, TPSA, cLogP, H-bond donors/acceptors, rotatable bonds, degree of unsaturation, formal charge • Simulated isotopic mass spectrum • Nicknames library (Me, Et, Ph, Bn, Ac, Ts, OMe, NO₂, CF₃, CO₂H…) with one-click set / expand • Clean Up Structure, Auto-Orient, Equalize Bond Angles NOMENCLATURE & SEARCH • Generate IUPAC name from structure • Structure from IUPAC name • Find and Replace substructure, query atoms, query bonds, atom lists, SMARTS REACTIONS • Reaction conditions editor • Atom-to-atom mapping • Reaction stoichiometry panel INTEROPERABILITY • Read and write native .chemp, MOL, SDF, RXN, RDF, SMILES, CDXML • Copy InChI, InChIKey, SMILES, MOLfile, CDXML, SMARTS • Export PDF (vector), SVG, PNG, TIFF • Rich clipboard: paste vector + raster + native into any app • QuickLook thumbnails and previews in Finder 3D VIEWER • Interactive SceneKit 3D window for any 2D structure DESIGNED FOR MAC • Universal binary (Apple silicon + Intel) • Sandboxed and hardened, no telemetry, no account required • AppleScript automation • Multiple document windows, page setup, and printing Includes ready-made sample documents (aspirin synthesis, caffeine, amino acids, and more) to explore right after you launch.

Ratings & Reviews

This app hasn’t received enough ratings or reviews to display an overview.

Very basic program
04/10/2015
TERT-BUTYL
I could draw structures after getting the hang of it. It is like an old version of Chem Draw once you get used to it, but it doesn’t have all of the features of the old Chem Draw (early 1990’s version) and is a much more cumbersome. For a double bond, draw a single bond then click on an existing single bond (click more to adjust appearance of double bond). The erasor is the X. I couldn’t find an arrow to include in a RXN scheme, and when I copy and paste into Keynote, the structure is pasted without ANY of the atom labels (for example, the N for nitrogen is missing from the structure). Keep working on it.
Very basic program
04/10/2015
TERT-BUTYL

I could draw structures after getting the hang of it. It is like an old version of Chem Draw once you get used to it, but it doesn’t have all of the features of the old Chem Draw (early 1990’s version) and is a much more cumbersome. For a double bond, draw a single bond then click on an existing single bond (click more to adjust appearance of double bond). The erasor is the X. I couldn’t find an arrow to include in a RXN scheme, and when I copy and paste into Keynote, the structure is pasted without ANY of the atom labels (for example, the N for nitrogen is missing from the structure). Keep working on it.
Little Value
10/21/2013
Jolsonite
This app is very difficult/at times impossible to use. It crashes, but that's not the biggest problem. For cyclic structures, you can't automatically get common sides - especially if the rings are not at the same angle beforehand (which they never are if you're joining say 6-member rings to 5-member rings). If you're used to Chem Draw, you will be sorely dissapointed with this app. There may be additional concerns, but I stopped using it after I discovered that I can't join rings (and then it crashed on me). $5 wasted.
Little Value
10/21/2013
Jolsonite

This app is very difficult/at times impossible to use. It crashes, but that's not the biggest problem. For cyclic structures, you can't automatically get common sides - especially if the rings are not at the same angle beforehand (which they never are if you're joining say 6-member rings to 5-member rings). If you're used to Chem Draw, you will be sorely dissapointed with this app. There may be additional concerns, but I stopped using it after I discovered that I can't join rings (and then it crashed on me). $5 wasted.
Worst App Ever
11/14/2013
Slambrose
I want my money back I'm so disappointed in this application. Drawing is molecules is difficult. This app is the worst chem drawing tool I have ever tried. please do not buy this app. I wish I hadn't wasted my money on this application. Please save your money
Worst App Ever
11/14/2013
Slambrose

I want my money back I'm so disappointed in this application. Drawing is molecules is difficult. This app is the worst chem drawing tool I have ever tried. please do not buy this app. I wish I hadn't wasted my money on this application. Please save your money
Do NOT waste your money!!!! HORRIBLE!
10/05/2015
Louis89-
This application is the most hard to figure out. Nothing works. It’s a piece of crap. This application must have took the designers 20min to build and they just want ur $$!!
Do NOT waste your money!!!! HORRIBLE!
10/05/2015
Louis89-

This application is the most hard to figure out. Nothing works. It’s a piece of crap. This application must have took the designers 20min to build and they just want ur $$!!

ChemPencil 2.1 brings one shared editor to macOS and Windows. • Correct stereochemistry: structures from SMILES and names now show the right enantiomer, and R/S names are fixed. Please re-check structures you created from SMILES or names in earlier versions. • Standard InChI with stereo, via the official InChI library. • Canonical isomeric SMILES for Copy SMILES and export. • MOL export keeps wedge and hash bonds. • Faster editing of large structures, more reliable aromatic handling. • Many drawing fixes: straight triple bonds, Clean Up keeps molecules in place, nudge/rotate with the arrow keys (Mac), working Stoichiometry amounts. • Updated help with new screenshots.

Version 2.1.0 1d ago

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The developer does not collect any data from this app.

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Information

Seller: Code Maker Inc.
Size: 126.2 MB
Category: Productivity
Compatibility: Requires macOS 12.0 or later.

Mac
Requires macOS 12.0 or later.
Languages: English
Age Rating: 4+

4+

Learn More

Developer Website

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Supports

Family Sharing

Up to six family members can use this app with Family Sharing enabled.

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ChemPencil

Ratings & Reviews

Very basic program

Little Value

Worst App Ever

Do NOT waste your money!!!! HORRIBLE!

What’s New

App Privacy

Data Not Collected

Accessibility

Information

Supports

Family Sharing

More by Code Maker Inc.