···2020 def parse(self, response):
2121 sel = Selector(response)
22222323+ title = sel.xpath('head/title/text()').extract()[0]
2424+ if title == 'Name Not Found':
2525+ log.msg('NIST: Chemical not found!', level=log.ERROR)
2626+ return
2727+2328 requests = []
24292530 requests.extend(self.parse_generic_info(sel))