21. Resin procured from the tree during the first three years is referred to as head benzoin . 22. The faster pathway is self-condensation with another molecule of aldehyde to give benzoin products. 23. Benzoin almonds do not resemble the resins they actually are but appear as a rough stony almonds.24. That which is obtained during the next 7 or 8 years is known as the belly benzoin . 25. For this reason the reaction is also called a "'benzoin addition " '. 26. Gum benzoin contains significant amount of "'coniferyl alcohol "'and its esters. 27. It is a different product from the benzoin resin produced from tropical trees in the genus Styrax. 28. Benzoin ethers, Acetophenones, Benzoyl Oximes, and Acylphosphines are some examples of cleavage-type photoinitiators.29. There is some disagreement as to whether or not benzoin should be used as a treatment for asthma. 30. Stacte may have been light Myrrh ( described above ) scented with " Styrax benzoin ".
