
Original preparation of quinine by Pelletier and Caveton
1820
1820
1819
1821
1775-1799 (original); 1900-1907 (model)
1820
1893-4
1863-7
1821
1825
2000-100 BCE
circa 1821-1825
1772 (original); 1919 (model)
1990-96
1823
1824
1824
1823-1825
1822
1705-1737
1820
1823
1825
1823-1825
1821
4000-2001 BCE
1821
1821
1610; 1923
1642-1649 (original); 1883 (model)
1668; 1924
1936
2050-1750 BCE
1990-95
1798 (original); 1977 (model)
300 BCE; 1905-1915
c.1825
1845-1964
1837-10
1820
1850-1899
1819
1820
1820-1824
1774; 1923
1819
1819
1819
1825
2000-100 BCE
1883-01