41. Hydrophobic residues interacting with the aliphatic tail of the cholesterol are labelled in white. 42. From a chemical point of view it belongs to the group of aliphatic esters. 43. Azides are cleanly reduced to amines in preference to sterically hindered aliphatic nitro groups: 44. Thiols, and sulfides can be removed from aliphatic , aromatic, or heteroaromatic compounds. 45. The reaction is most successful when " R " is aliphatic and inert. 46. Aliphatic materials can be sprayed in a wide variety of colors, including metallic finishes.47. It uses the characteristics of aliphatic polyamine. 48. Cleavage type photoinitiators do not require a co-initiator, such as aliphatic amines. 49. Aliphatic polyanhydrides consist of R groups containing carbon atoms bonded in straight or branched chains.50. Various types of aromatic, heterocyclic, some aliphatic aldehydes and amines have been prepared.