1,3-dioxolane ketal of isatin; p-sulfonic acid-calix[n]arene; reusable catalytic system; supramolecular catalysis The exact masses of calix[n]arene compounds were obtained using a Fourier-transform ...

For those who wish to follow similar guidelines, the following outlines the limitations of the use of the VH rating system. Second, ingredients basic to cosmetic formulations (acidifiers ...

In one case, the person reacted positively to the p-tert-butylphenol formaldehyde resin used in after-manufacturing modifications to impart a wrinkle-free appearance to the clothing and decrease ...