This OLCC programming example page demonstrates getting a list of isomers from PubChem using JavaScript.
It does this using one of the PubChem "fast" methods. No polling of the server is required.

Press the "test" button to evaluate the JavaScript in the textarea below.
Feel free to modify the JavaScript and press test again.

var mf = "C3H6O"; // acetone and what else? var key = "IUPACName"; var pcGetList = function(query, key) { var url = "https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/" + query + "/property/" + key + "/JSON"; $("#url").html(url); $.ajax({ url:url, dataType:"json", success: function(data){pcReturnList(data, key)}, error: function(data){alert("ohoh " + data);xxd = data;} }); } var n = 0; var pcReturnList = function(data, key) { $("#result").html(JSON.stringify(data, null, "\t")); $("#status").html("done"); var props = data.PropertyTable.Properties; var list = []; for (var i = 0; i < props.length; i++) list.push(props[i][key] || "?"); alert(list.length + " compounds were found:\n\n" + list.join("\n")); } pcGetList("fastformula/C3H6O", "IUPACName");


url:
status:
result: