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style="background: #F8EABA; text-align: center;" colspan="2" | Identifiers
CAS number 64739-76-0
style="background: #F8EABA; text-align: center;" colspan="2" | Properties
Molecular formula C17H18INO3
Molar mass 411.23 g mol−1
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

1-Iodomorphine is a semi-synthetic narcotic analgesic formed by halogenation of the 1 position on the morphine carbon skeleton.[1][2][3] Halogenated morphine derivatives were first synthesised in Germany, Austria/Austria-Hungary, the United Kingdom and the United States in the period 1890 to 1930. Use of this drug increased after 1945 for the below-mentioned research. It is a research chemical which is often prepared in the laboratory when it is needed.

Along with the similar 2-iodomorphine as well as iodinated analogs of dihydromorphine, dihydrocodeine, heroin, and the fluorinated, chlorinated, and brominated analogues of this series, this change may not impact the activity of the drug to a notable extent[citation needed] but 1- and 2-iodomorphine are used in pharmacological, neurological, metabolic, and endocrine research as it allows the tagging of morphine with iodine-131 or iodine-129.[4] Such research was important in the discovery of opioid receptors in the central nervous system, peripheral nervous system, and other tissues in humans, mammals, birds, and some reptiles, amphibians, fish, insects, and arthropods.

More recently, research on fluoro-opioids has showed that this subcategory of the semi-synthetic opioids may be a promising direction for research for strong opioids with very rapid onset of action.[citation needed]


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  1. Liebman, A. A.; Malarek, D. H.; Blount, J. F.; Nelson, N. R.; Delaney, C. M. (1978). "Preparation and crystal structure of 6-acetyl-1-iodocodeine". The Journal of Organic Chemistry. 43: 737. doi:10.1021/jo00398a049.  edit
  2. doi:10.1002/(SICI)1099-1344(1998090)41:9<811::AID-JLCR132>3.0.CO;2-3
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  3. Wentland, M. P.; Duan, W.; Cohen, D. J.; Bidlack, J. M. (2000). "Selective Protection and Functionalization of Morphine:  Synthesis and Opioid Receptor Binding Properties of 3-Amino-3-desoxymorphine Derivatives†,1". Journal of Medicinal Chemistry. 43: 3558. doi:10.1021/jm000119i.  edit
  4. Tafani, J. A. M.; Lazorthes, Y.; Danet, B.; Verdie, J. C.; Esquerre, J. P.; Simon, J.; Guiraud, R. (1989). "Human brain and spinal cord scan after intracerebroventricular administration of iodine-123 morphine". International Journal of Radiation Applications and Instrumentation. Part B. Nuclear Medicine and Biology. 16: 505. doi:10.1016/0883-2897(89)90064-0.  edit