In IUPAC nomenclature, however, hexane is the unbranched isomer (n-hexane); the other four isomers are named as methylated derivatives of pentane and butane. IUPAC also uses the term as the root of many compounds with a linear six-carbon backbone, such as 2-methylhexane (C7H16), which is also called isoheptane.
Dentin is the substance between enamel or cementum and the pulp chamber. It is secreted by the odontoblasts of the dental pulp. The formation of dentin is known as dentinogenesis. The porous, yellow-hued material is made up of 70% inorganic materials, 20% organic materials, and 10% water by weight.
Phosphorus - Mineral. Phosphorus comprises approximately from 0.8% to 1.1% of total body weight. 80-90% of this phosphorus is found within the skeleton and teeth, where it is compounded with calcium to form calcium phosphate. Calcium phosphate is a primary constituent of hydroxyapatite crystals in bone and teeth, and helps to add structural rigidity to the softer organic portions.