4-Keto-DANA exists as an equilibrium between two ring-flipped forms; however, the form with the equatorial glycerol and N-acetyl substituents would be expected to predominate. Preferably, the substantial identity exists over a region of the sequences that is at least about 50 residus in length, more preferably over a region of at least about 100 residus, and most preferably the sequences are substantially identical over at least about 150 residus If you liked this information and you would such as to get even more information concerning manufacturer of sialic acid powder for drink Ingredients kindly see our web-page. .