The phrase "a compound is a" is correct and usable in written English.
It can be used when defining or explaining what a compound is in a scientific or educational context.
Example: "In chemistry, a compound is a substance formed when two or more elements are chemically bonded together."
Alternatives: "a compound refers to" or "a compound can be defined as".
A compound is a more complex form of matter made up of chemically combined elements.
When none of the elements in a compound is a metal, no atoms in the compound have an ionization energy low enough for electron loss to be likely.
Such a compound is a good enzyme mimetic since lithium is four-coordinated to one water molecule and three carboxylic groups.
For instance, a compound is a carboxylic acid if and only if there exists a carbon contained in the compound such that (i) the carbon has a double bond with an oxygen and(ii) the carbon has a single bond with an oxygen that is connected through a single bond to a hydrogen (O = C - OH).
MBTPsubDS1_0 and MBTPsubDS1_0a datasets were created using the data contained in Metrabase v1.0 to allow a structural analysis of the transporter substrates and generation of transporter models that can predict whether or not a compound is a substrate of a range of efflux and uptake transporters (this work will be published elsewhere).
A compound is a chemical entity that corresponds to a unique chemical structure.
The experimental ratio for MDR reversal agents was used as a determining parameter of whether a compound is an inhibitor.
At first, sentries at The New York Times allowed interior capitals only when the second element of a compound was a proper noun — when the word crammed next to "Bank" was "America," for example.
To test if a compound was a substrate for activated SAMHD1, 1 mM of the compound plus 200 μM GTP was included.
To test if a compound was an allosteric activator, 1 mM TTP substrate plus 200 μM of the compound was employed.
For all 28 compounds in the sample data set, we performed the GoldScore-based classification by choosing 80% of the GoldScore of the corresponding cocrystal ligand as a cutoff for whether a compound was an agonist (Table 1).
