... Beiersdorf AG, Unnastrasse 48, D-20245 Hamburg, Germany, and Bode-Chemie, Melanchthonstrasse 27 ... Albert et al. ... The methylol signals of A are at 63.0 (2) and 61.6 ppm (3) and the quaternary carbon of A is at 62.1 ppm (1). The methylol signal of B is at 61.3 ppm (3') ...