USEPA · madison-feshuk · Oct 6, 2025 · Oct 6, 2025
diff --git a/vignettes/ctxR_01_Introduction.Rmd b/vignettes/ctxR_01_Introduction.Rmd
@@ -66,7 +66,7 @@ The CCD can be queried for one chemical at a time or using batch search.
 
 ## Searching one chemical at a time (single-substance search)
 
-In single-substance search, the user enters a full or partial chemical identifier (name, CASRN, InChiKey, or DSSTox ID) into a search box on the CCD homepage. Autocomplete can provide a list of possible matches. Figure 1 shows an example: the CCD landing page for the chemical [Bisphenol A](https://comptox.epa.gov/dashboard/chemical/invitrodb/DTXSID7020182). This page is generated for Bisphenol A and links to but does not represent other chemicals. Each chemical in the CCD has its own page similar to this, with varying levels of accessible based on the information that is available.
+In single-substance search, the user enters a full or partial chemical identifier (name, CASRN, InChiKey, or DSSTox ID) into a search box on the CCD homepage. Autocomplete can provide a list of possible matches. Figure 1 shows an example: the CCD landing page for the chemical [Bisphenol A](https://comptox.epa.gov/dashboard/chemical/details/DTXSID7020182). This page is generated for Bisphenol A and links to but does not represent other chemicals. Each chemical in the CCD has its own page similar to this, with varying levels of accessible based on the information that is available.
 
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@@ -78,7 +78,7 @@ The different domains of data available for this chemical are shown by the tabs
 
 ## Batch search
 
-In [batch search](https://comptox.epa.gov/dashboard/batch-search), the user enters a list of search inputs, separated by new lines, into a search box. The user selects the type(s) of inputs by selecting one or more checkboxes – include chemical identifiers, monoisotopic masses, or molecular formulas. Then, the user selects “Display All Chemicals” to display the list of substances matching the batch-search inputs, or “Choose Export Options” to choose options for exporting the batch-search results as a spreadsheet. The exported spreadsheet may include data from most of the domains available on an individual substance’s CCD page.
+In batch search, the user enters a list of search inputs, separated by new lines, into a search box. The user selects the type(s) of inputs by selecting one or more checkboxes – include chemical identifiers, monoisotopic masses, or molecular formulas. Then, the user selects “Display All Chemicals” to display the list of substances matching the batch-search inputs, or “Choose Export Options” to choose options for exporting the batch-search results as a spreadsheet. The exported spreadsheet may include data from most of the domains available on an individual substance’s CCD page.
 
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diff --git a/vignettes/ctxR_02_Chemical.Rmd b/vignettes/ctxR_02_Chemical.Rmd
@@ -216,7 +216,7 @@ msready_by_dtxcid <- get_msready_by_dtxcid(DTXCID = 'DTXCID30182')
 
 # List Resource
 
-There are several lists of chemicals one can access using the [(CCD list search)](https://comptox.epa.gov/dashboard/chemical-lists). These can be filtered by the type, name, inclusion of a specific chemical, or name of list.
+There are several lists of chemicals one can access using the CCD list search. These can be filtered by the type, name, inclusion of a specific chemical, or name of list.
 
 ## Get all list types
 

diff --git a/vignettes/ctxR_05_Hazard.Rmd b/vignettes/ctxR_05_Hazard.Rmd
@@ -116,7 +116,7 @@ genetox_details <- get_genetox_details(DTXSID = 'DTXSID7020182')
 
 The fourth Drinking Water Contaminant Candidate List (CCL4) is a set of chemicals that "...are not subject to any proposed or promulgated national primary drinking water regulations, but are known or anticipated to occur in public water systems...." Moreover, this list "...was announced on November 17, 2016. The CCL 4 includes 97 chemicals or chemical groups and 12 microbial contaminants...." The National-Scale Air Toxics Assessments (NATA) is "... EPA's ongoing comprehensive evaluation of air toxics in the United States... a state-of-the-science screening tool for State/Local/Tribal agencies to prioritize pollutants, emission sources and locations of interest for further study in order to gain a better understanding of risks... use general information about sources to develop estimates of risks which are more likely to overestimate impacts than underestimate them...."  
 
-These lists can be found in the CCD at [CCL4](https://comptox.epa.gov/dashboard/chemical-lists/CCL4) with additional information at [CCL4 information](https://www.epa.gov/ccl/contaminant-candidate-list-4-ccl-4-0) and [NATADB](https://comptox.epa.gov/dashboard/chemical-lists/NATADB) with additional information at [NATA information](https://www.epa.gov/national-air-toxics-assessment). The quotes from the previous paragraph were excerpted from list detail descriptions found using the CCD links.
+These lists can be found in the CCD with additional information at [CCL4 information](https://www.epa.gov/ccl/contaminant-candidate-list-4-ccl-4-0) and  [NATA information](https://www.epa.gov/national-air-toxics-assessment). The quotes from the previous paragraph were excerpted from list detail descriptions found on the CCD.
 
 In this example use case, hazard data will be compared between a water contaminant priority and an air toxics list.