DOI 10.1039/D2CP01254E is missing from the polite REST API but available from the public one.
Using content negotiation against the public API returns a 200 OK response. When adding our email address to the User-Agent to access the polite API, the response is a 404 Not Found.
API endpoint that we’re calling is:
api[dot]crossref[dot]org/v1/works/10.1039%2FD2CP01254E/transform
We do have a bug in the way in which some new DOIs are indexed in the REST API. That bug has resulted in this DOI from missing from the REST API. I have asked our technical team to re-push this DOI so it can be indexed. You may follow our progress here: [CR-532] - Jira.