Stereochemistry of Amino Acids RS to DL

Amino Acid Stereochemistry RS DL

Amino acids are biologically active molecules. 19 of the 20 common amino acids have a chiral alpha carbon, 2 amino acids (Leucine and Threonine) have a second chiral center in their side chain. This video shows you how to Find R/S for 3-D amino acids Find R/S and D/L for amino acid Fischer projections Trick […]

Fischer Projection R and S Stereochemistry Trick

Fischer Projection Stereochemistry Finding R and S configurations

Chirality/Stereochemistry Video Series: Video 6 Fischer projections provide a simple 2-dimensional representation for complex 3-dimensional structures. Which is great for drawing complex molecules, but not so much fun if asked to determine R and S configurations. Many books and professors will have you redraw the Fischer projection into a 3-dimensional sawhorse or skeletal structure. I […]

Video Transcript : Converting Fischer to Hayworth Pyaranose and Furanose

Converting Fischer to Haworth and Chair for glucose and fructose tutorial video

Below is the written transcript of my YouTube tutorial video Converting Fischer to Hayworth Pyaranose and Furanose. If you prefer to watch it, see Video HERE, or catch the entire Fischer Projections Tutorial Series. (click here to see the video on YouTube) [Start of Transcript] Leah here from leah4sci.com/MCAT, and in this video, I’m going […]

Converting Fischer to Hayworth Pyaranose and Furanose Video Tutorial

Converting Fischer to Haworth and Chair for glucose and fructose tutorial video

Video 5 in the Fischer Projection series shows you how to convert a linear sugar in the Fischer Projection to a 6-member Hayworth Projection Pyranose or 5-member Furanose. You’ll learn my shortcut to help you instantly recognize the correct version of any cyclic sugar. (click to watch on YouTube. or catch theĀ  Video transcript here) […]

Converting Newman to Fischer Projections Tutorial Video

Converting Newman to Fischer Projections Video

Fisher Projection Series: Video 4 (Newman Projection Series: Video 6) This video shows you how to convert from a Newman Projection to a Fischer projection using the long and tedious method followed by my shortcut. You’ll also see my trick from converting from Fischer back to Newman. (Watch on YouTube: Newman to Fisher. Click CC […]

Fischer Projection Stereochemistry Finding R and S for Single and Multiple Chiral Centers

Fischer projection stereochemistry r s for single and multiple chiral centers (2)

Finding chirality for a 2-dimensional Fischer projection can be tricky. But it doesn’t have to be. This video shows you how to prioritize and rank groups on a Fischer projection when you have one or more chiral center. This video also addresses chirality when group #4 (H) is not going down/into the page (click to […]

Converting Sawhorse to Fischer Projections Tutorial Video

Sawhorse to Fischer Projections orgo tutorial video

Converting between sawhorse and Fischer projections is a critical skill in understanding your chiral molecules. Even if you’re not required to DRAW conversions on your exam, knowing HOW is a critical skill to truly understanding the nature of chirality in Fischer Projections. This video shows you my step by step + shortcut approach. (click to […]

Fischer Projections Tutorial Video for Single and Multiple Chiral Centers

Fischer projections tutorial video how to draw part 1

Fischer projections are a key skill required at the organic chemistry and definitely at the biochemistry molecule. Instead of drawing complex 3-dimensional structures over and over, you simply learn how to draw a ‘flat’ version of the molecule without losing its chirality. This video is the first in a 5-part series to help you learn […]