alkaloid

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Saint Lucia Day. Young girl wears Lucia crown (tinsel halo) with candles. Holds Saint Lucia Day currant laced saffron buns (lussekatter or Lucia's cats). Observed December 13 honor virgin martyr Santa Lucia (St. Lucy). Luciadagen, Christmas, Sweden

7 Winter Solstice Celebrations From Around the World

Facsimile of one of William Henry Ireland's forgeries, a primitive self-portrait of William Shakespeare(tinted engraving). Published for Samuel Ireland, Norfolk Street, Strand, December 1, 1795. (W.H. Ireland, forgery)

The Time a Law Clerk Successfully Forged a New Shakespeare Play to Impress His Dad

King Cobra snake in Malaysia. (reptile)

9 of the World’s Deadliest Snakes

Stylish light blue jeans on wooden background, closeup of inset pocket

Why Do Jeans Have That Tiny Pocket?

Four year old boy with grandfather and father lighting Hanukkah menorah. Photo taken on: December 21st, 2009

Which Is Correct: Hanukkah or Chanukah?

World Data Locator Map: Australia

Is Australia an Island?

Srinivasa Ramanujan, Indian mathematician and autodidact.

6 Interesting Facts about Srinivasa Ramanujan

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Topics

sanguinarine piperine quinidine hyoscyamine solanine pilocarpine bebeerine coniine ergonovine indole alkaloid protein hormone lipid carboxylic acid hydrocarbon heterocyclic compound organosulfur compound nucleic acid carbohydrate steroid

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opium: Opium alkaloids

Key People

Richard Willstätter

German chemist

Sir Robert Robinson.

Sir Robert Robinson

British chemist

Pierre-Joseph Pelletier

French chemist

Adams, Roger

Roger Adams

American chemist