Newcastle sweet (Neotame) is a new kind of two skin class powerful sweetener, fasten o Sparta sweet derivatives. Newcastle sweet in stability and use cost is superior to o Sparta sweet, since the advent of world food bounded by the attention. July 2002, the FDA approval Newcastle in food use. Sweet China also in April 2003 approved new sweet in various food use, according to production requirements to add. Newcastle have sweet, sweet sweetness high pure and stability.it application very extensive.

Newcastle sweet generally by o Sparta sweet and 3,3-Dimethylbutyraldehyde reacts, because o Sparta sweet ample supply, price stability, reason 3,3-Dimethylbutyraldehyde constraints become the important factor of Newcastle sweet production, its quality and production costs for Newcastle sweet production and marketing of play an important influence.

At present, the domestic market of 3,3-Dimethylbutyraldehyde lower quality, main content is commonly 95% below, better quality can only also reached 95% - 98%, one of the impurities and solvent content still higher, the quality rank only commonly used in animal feed sweetener production.

In medicine and food industries, 3,3-Dimethylbutyraldehyde used in medicine food production of raw materials and the content of the requirements at least over 99%. However, in the current market, content can reach more than 99%, even the production factory seldom 99.5%, especially in the process of production is absolutely cannot use the FDA prohibited by the solvent, and possible heavy metal or compounds impurities.

Gold elephant chemical industry in recent years time, through the process, trial and refinement in manufacturing process use complies with the FDA within the limits prescribed by solvent, produces high grade (p 99.5%) of 3,3-Dimethylbutyraldehyde, already in Europe, India's user applications are approved for use.