Pubchem
To extract data from PubChem starting from the compounds CID
https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/cid/33032,5961,681,439260,5202,119/property/ExactMass,CanonicalSMILES,Title/CSV
https://pubchem.ncbi.nlm.nih.gov/docs/pug-rest#section=URL-based-API
List of compounds property can be found at https://pubchem.ncbi.nlm.nih.gov/docs/pug-rest#section=Compound-Property-Tables
https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/cid/33032,5961,681,439260,5202,119/property/MolecularFormula,ExactMass,MolecularWeight,CanonicalSMILES,IsomericSMILES,InChI,InChIKey,XLogP,Title/CSV