The phrase "a precursor for a" is correct and usable in written English.
It can be used when discussing something that serves as a forerunner or an indication of something that will follow.
Example: "The discovery of this ancient artifact is a precursor for a deeper understanding of the civilization's culture."
Alternatives: "a precursor to a" or "an indicator of a".
Being awarded an R01 grant has essentially become a precursor for a faculty career at a research-oriented university.
They diagnosed the symptoms after testing as a common condition, "benign positional vertigo," and said it was not a precursor for a stroke.
But reflecting on that source is a precursor for a level of self-awareness that is both clearly lacking and clearly needed.
This council would not have policy-making powers, but would serve as a precursor for a fully-fledged GCC central bank.
The geraniol-derived (seco iridoid skeleton is a precursor for a large group of bioactive compounds with diverse therapeutic applications, including the widely used anticancer molecule vinblastine.
Asked if this move might be a precursor for a possible ultimate merger between Concacaf and Conmebol, Figueredo clearly flirted with the idea while kicking the question down the road to be addressed by the next generation.
The nitro group serves as a precursor for an amino group which can be converted into a reactive isothiocyanate group.
Questioning the One-China policy, which has guided the most important global relationship of the United States since President Nixon landed in Beijing on Air Force One, can become a precursor for an actual shooting war.
An animated television series, two direct-to-video (OVA) single releases, and a concert film were also produced, the first of which became a precursor for an internet meme when its finale was pulled from broadcast.
It is evident from this study that the Indian tribal community is experiencing a latent phase that is potentially a precursor for an HIV/AIDS epidemic.
Thus, the polyimide sheet acts as both a precursor for the carbonization and a flexible substrate.
