@carolinering and I are both having issues with the following functions:

bpa_info <- get_chem_info(DTXSID = 'DTXSID7020182')

returns NULL

biosolids_info <- get_chem_info_batch(DTXSID = biosolids2021$dtxsid)

Warning message:
In get_chem_info_batch(DTXSID = biosolids2021$dtxsid) : Setting type to ''!

bpa_hazard <- get_hazard_by_dtxsid(DTXSID = 'DTXSID7020182')

returns NULL

bpa_hhazard <- get_human_hazard_by_dtxsid(DTXSID = 'DTXSID7020182')

returns NULL

Possible reason for the failure of get_chem_info(): It looks like the schema has changed for chemical properties (which are fetched by get_chem_info()) , based on https://comptox.epa.gov/ctx-api/docs/chemical.html. Rather than having one API endpoint /property/search/by-dtxsid with optional different projections (experimental or predicted), it looks like there are now multiple different endpoints:

• /chemical/property/summary/search/by-dtxsid/ -- for overall summaries (e.g. median/mean of experimental and predicted)
• /chemical/property/predicted/search/by-dtxsid/ -- for predicted properties only
• /chemical/property/experimental/search/by-dtxsid/ -- for experimental properties only

We will have to write new functions for each of these, and rewrite get_chem_info() for backwards compatibility -- if type = '', then get_chem_info() will have to pull both predicted and experimental properties.

(I suggest that the new functions be called something like get_chem_props_summary(), get_chem_props_pred(), and get_chem_props_exp() -- something that explicitly refers to "properties." I always get confused about the difference between get_chem_info() and get_chem_details(), because "info" is so non-specific.)

The failure of get_chem_info_batch() is probably due to a similar problem. According to https://comptox.epa.gov/ctx-api/docs/chemical.html, we now have /chemical/property/predicted/search/by-dtxsid/ and /chemical/property/experimental/search/by-dtxsid/ as separate API endpoints for predicted and experimental properties, rather than having just one API endpoint with different projections.

These functions indeed have been affected by changes in the schema. We could deprecate the current affected functions and write functions for the new endpoints, with more descriptive names.

I have updated the chemical endpoint functions (get_chem_info() and get_chem_info_batch()) that were affected and noted above. I have also deprecated the hazard endpoint functions that were affected (get_hazard_by_dtxsid(), get_human_hazard_by_dtxsid(), get_ecotox_hazard_by_dtxsid() and batch versions) and could not be pieced together using new endpoints.

The failure of get_chem_info_batch() is probably due to a similar problem. According to https://comptox.epa.gov/ctx-api/docs/chemical.html, we now have /chemical/property/predicted/search/by-dtxsid/ and /chemical/property/experimental/search/by-dtxsid/ as separate API endpoints for predicted and experimental properties, rather than having just one API endpoint with different projections.

Getting an error that the props functions do not exist for some reason:
bpa_props_pred <- get_chem_props_pred(DTXSID = 'DTXSID7020182')
Error in get_chem_props_pred(DTXSID = "DTXSID7020182") :
could not find function "get_chem_props_pred"
bpa_props_exp <- get_chem_props_exp(DTXSID = 'DTXSID7020182')
Error in get_chem_props_exp(DTXSID = "DTXSID7020182") :
could not find function "get_chem_props_exp"

Added function documentation, including export calls, so those new functions should now work as expected when called.