Postage stamp commemorating the 5th Biennial Symposium of the Iranian Biochemical Society
- 1975
Stamp depicts a generic formula for an amino acid where R stands for "radical." In organic chemistry, this nomenclature represents the possibility of any one of a series of aliphatic groups, like methyl, ethyl, propyl, butyl, etc. The "NH2" on the right side is the amino group and the "COOH" is a carboxylic acid. The "C" in the middle is a carbon atom and the "H" on the left is a hydrogen atom.
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Cite as
“Postage Stamp Commemorating the 5th Biennial Symposium of the Iranian Biochemical Society.” Iran, 1975. Witco Stamp Collection, Box 1. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/8k71nh141.
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