A user is seeking a Materials Safety Data Sheet (MSDS) for 4-Methyl-1-acetoxycalix[6]arene, also known as Calixarene, which is a new photoresist used in nanotechnology. The user initially struggled to find the MSDS, contacting suppliers without success. Another participant suggested checking Sigma-Aldrich, while another offered to consult a chemistry professor for assistance. It was noted that the manufacturer in Japan has an MSDS available, but it is in Japanese. Eventually, one user received the MSDS via fax from Tokyo Kasei Kogyo Company, confirming that the company does respond to requests. The MSDS indicates that the chemical has no known carcinogenic, mutagenic, or teratogenic effects, but is classified as combustible. The discussion highlights the challenges in obtaining safety information for newer chemicals and the importance of having MSDS documentation for laboratory use.