Morphine was the first single-substance drug to be derived from a plant, in this case from the resin of the opium poppy (Papaver somniferum) by a German pharmacist named Setru â¦ rner, in 1803-1805. It was first sold commercially by Heinrich Merck in the 1820's.
1 To find percentiles outside of this range, use the PERCENTILE.INC function. The syntax on this function is exactly the same as for the PERCENTILE.EXC function.  If you will need this worksheet to run on versions of Excel prior to 2007, use PERCENTILE instead of PERCENTILE.EXC or PERCENTILE.INC.
1 The 1st quartile is the same as the 25th percentile; 2  The 2nd quartile is the same as the 50th percentile; 3  The 3rd quartile is the same as the 75th percentile;  The 4th quartile is the same as the 100th percentile (and is equal to the maximum value in the range).