get_cid() returns different results now vs. months ago

[francivita]

Hi,

I’m seeing different results from get_cid() for the query "cyanocobalamin" compared to what I obtained a few months ago, and I’m trying to determine whether this is expected (e.g., PubChem changes) or whether something in webchem has changed.

Old results (saved from earlier runs)

Using:

get_cid(
  query = "cyanocobalamin",
  from = "name",
  domain = "compound",
  match = "all"
)

I previously obtained 22 CIDs, e.g.:

5311498
184933
70678590
16212801
24892734
25102581
46853873
54605677
118701720
129627537
... (12 more)

Current results (same code now)

Running the same call today:

get_cid(
  query = "cyanocobalamin",
  from = "name",
  domain = "compound",
  match = "all",
  verbose = TRUE
)

returns only a single CID:

166596686

Similarly:

get_cid(query = "cyanocobalamin", match = "first")

now returns 166596686, whereas older results had 5311498 as the first match.

Is this change expected?

• Did PubChem update synonyms or name-matching behavior?
• Has the way webchem handles match = "all" changed?

Thanks.

[stitam]

Thanks @francivita for opening this issue. The PubChem website returns 104 compounds hits for cyanocobalamin so a single hit by webchem is problematic. However, I don't recall any changes in get_cid() in the past months, so maybe the API has changed. I will look into this.