This basic model set has enough parts to build any of the ketones, acetone, butanone, 2-pentanone and 3-pentanone, shown in the image. Build these & other ketones with the Indigo™ Instruments 3D Molecular Model Builder
Every Orbit molecular model set sold by Indigo Instruments is fully compatible with others you might own. You can replenish any set or customize it with Genuine Cochranes of Oxford Orbit Atoms.
I've had consistently great service from this company. Our students seem to really appreciate the reasonable price. In the years that we've used this product, not one has been returned due to defects.
Considering how many of these we sell to schools every year, that is high praise indeed. Thanks letting us know.