Sigma-Aldrich's catalogue number = 219096. There's no explanation about whether it can be used as reference material nor about the suitability for HPLC.
Jessica, that is an analytical grade reagent. Any chemical with less than 5% impurities can be acceptable for analysis. In general, technical grade or laboratory grade are the lowest purity. ACS Reagent grade means that the chemical conforms to specifications defined by the Committee on Analytical Reagents of the American Chemical Society (but Aldrich "ReagentPlus" means >95% pure). ... Analytical grade is generally the most pure.