Chemical Structures Starting with the Letter U

by Anne Marie Helmenstine, Ph.D.
Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. She has taught science courses at the high school, college, and graduate levels.
Updated November 05, 2019
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Urea

Urea is an organic molecule that is also know as diaminomethanal or carbamide.
Urea is an organic molecule that is also know as diaminomethanal or carbamide. It was the first organic molecule to be artificially synthesized. Ben Mills

Browse structures of molecules and ions that have names beginning with the letter U.

Urea has the molecular formula (NH2)2CO.

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Uridine Chemical Structure

This is the chemical structure of uridine.
This is the chemical structure of uridine. Todd Helmenstine

The molecular formula for uridine is C9H12N2O6.

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Ursane Chemical Structure

This is the chemical structure of ursane.
Terpene This is the chemical structure of ursane. Todd Helmenstine

The molecular formula for ursane is C30H52.

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Urushiol Chemical Structure

Urushiol is the 'poison' found in poison ivy, poison oak, poison sumac, and the skin of mangoes.
Urushiol is the allergenic oil found in poison ivy, poison oak, poison sumac, and the skin of mangoes. Calvero, Wikipedia Commons

Urushiol consists of a catechol molecule attached to an alkyl chain at R.

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Uracil Chemical Structure

This is the chemical structure of uracil.
This is the chemical structure of uracil. NEUROtiker/PD

The molecular formula for uracil is C4H4N2O2.

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Uranium Hexafluoride

This is the three-dimensional crystal structure for uranium hexafluoride.
This is the three-dimensional crystal structure for uranium hexafluoride. Ben Mills
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Uranium Hexafluoride

This is the three-dimensional structure of uranium hexafluoride.
This is the three-dimensional structure of uranium hexafluoride. Ben Mills

The formula for uranium hexafluoride is UF6.

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Uridine Chemical Structure

This is the chemical structure of uridine.
This is the chemical structure of uridine. Todd Helmenstine

The molecular formula for uridine is C9H12N2O6.

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Umbelliferone Chemical Structure

This is the chemical structure of umbelliferone.
This is the chemical structure of umbelliferone. Yikrazuul/PD

The molecular formula for umbelliferone is C9H6O3.

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Undecanol Chemical Structure

This is the chemical structure of undecanol.
This is the chemical structure of undecanol. Edgar181/PD

The molecular formula for undecanol is C11H24O.

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Undecane Chemical Structure

This is the chemical structure of undecane.
This is the chemical structure of undecane. Todd Helmenstine

The molecular formula for undecane is C11H24.

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Urea Chemical Structure

This is the chemical structure of urea.
This is the chemical structure of urea. Ben Mills/PD

The molecular formula for urea is CH4N2O.

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Urethane Chemical Structure

This is the chemical structure of urethane.
This is the chemical structure of urethane. Ben Mills/PD

The molecular formula for urethane, also known as ethyl carbamate, is C3H7NO2.

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Uric Acid Chemical Structure

This is the chemical structure of uric acid.
This is the chemical structure of uric acid. NEUROtiker/PD

The molecular formula for uric acid is C5H4N4O3.

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Usnic Acid Chemical Structure

This is the chemical structure of usnic acid.
This is the chemical structure of usnic acid. Fvasconcellos/PD

The molecular formula for usnic acid is C18H16O7.

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Uranin Chemical Structure

This is the chemical structure of uranin.
This is the chemical structure of uranin. Todd Helmenstine

The molecular formula for uranin is C20H12O5.

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Uranium Tetrafluoride

This is the crystal structure of uranium tetrafluoride or uranium(IV) fluoride.
This is the crystal structure of uranium tetrafluoride or uranium(IV) fluoride. A. C. Larson, R. B. Roof Jnr and D. T. Cromer, Creative Commons

Uranium tetrafluoride or uranium(IV) fluoride also is known as green salt. Its molecular formula is UF4.