Comment · Thu, March 12, 2015 · Ceretropic
The effect of R-(-)-deprenyl administration on reproductive parameters of rat males (2015) - Males had higher sperm counts after low dose treatment, looking towards human infertility application
What they were answering
methylfentanyl · 2 points
Yes, obviously. I should've made that clearer. D-deprenyl has garnered much interest in the community. But we don't have a reputable supplier, do we?
u/MisterYouAreSoDumb · Ceretropic
No, I was wrong. I was conflating the prefixes used in labeling chiral molecules. The levorotory enantiomer always has a negative specific rotation, while dextrorotory enantiomers always have a positive specific rotation. The R and S cannot be directly translated to dextro or levorotory. Levomethamphetamine is actually R-(-)-N-methylamphetamine. The article you posted is for L-deprenyl. D-deprenyl would be S-(+)-deprenyl.
We do not yet have a reliable supplier.