Our special intermediates are mainly a combination of our own actual product structure and product properties, including: 1. The product does not belong to any other product of our company intermediates, 2. Chemical reaction type is more special 3. Can be used to synthesize two or more kinds of API which roles is almost equivalent and difficult to separate the level. 4. This intermediate is somewhat less used for actual production or less practical use. We summarized the above four cases of intermediates temporarily as a special intermediate, if the special intermediate application is enlarge, we will adjust it according to the actual situation to change its "identity."
Special Intermediates,Tofisopam Intermediates,Amisulpride Intermediates,Antithrombotic/Blood thinners Taizhou Volsen Chemical Co., Ltd. , https://www.volsenchem.com
Shoots often appear bamboo shoot discoloration, deformity, hollow, cracking, bitterness, hardening, rust, scattered head and other products become inferior or other foreign goods, lower production output value, are described separately. First, white asparagus changes color. The main reason is that the tender stems are caused by the light, which is related to the soil texture, humidity, temperature and tightness of the soil. Sandy soil and heavy clay blocks are heavy in color, high in soil temperature, arid in soil, poor in soil and fresh stems, and heavy in color. After harvesting bamboo shoots, they are discolored by light. In order to prevent the discoloration of bamboo shoots, sandy loam or loam soil should be used for cultivation. The management should be fine, so that the soil is finely and evenly loosened, the water content is moderate, and the soil is loose and uniform. Second, malformed bamboo shoots. It is mainly due to improper fertilization, soil viscosity, scum and debris (Lump), the tender stem when convulsions suffer from insect pests, uneven soil elasticity, mixed with masonry tiles and other factors in the soil, should take measures to identify the reasons. Third, hollow bamboo shoots. Due to the partial application of nitrogenous fertilizer and the lack of phosphorus and potassium fertilizers, the underground stems have less storage nutrients, and the stems are hollow due to lack of nutrients during pumping. Fourth, the tender stem cracking. Also called bursting. Due to the lack of phosphorus and potassium fertilizers in the soil, they encountered drought and suddenly watered or rained. Attention should be given to increasing phosphorus and potash fertilizers. During harvesting, ensure that the soil moisture supply is prevented from drying out and dampening. Use a 1 kg of brine (salt) per acre for the severely-bursted plots, water 500 times as much as possible, or use water from pickled vegetables. Diluted with salt mixture and other meat foods in the mixture of water and seasonings (agents). Five, bamboo shoots taste bitter. With the plant age, temperature, moisture, fertilizer, soil and other conditions. General old plants have severe bitterness at high temperature and drought or water accumulation, partial application of nitrogen and less phosphorus and potassium, soil viscous heavy cementation, and soil acidity. In addition, the tender stems are harmed by pests and diseases. When the green shoots are dehydrated and wilted during storage, the bitterness can be aggravated. Six, hardening is also called aging. The tender stems of old plants or debilitated plants are susceptible to lignification. High temperature and drought, nitrogen deficiency can cause hardening: pests and diseases are serious, hardening is severe, harvesting is not timely or storage and transportation time is too long, serious water loss, hardening is also serious. The management should be strengthened to ensure the supply of fertilizers and water, prevent diseases, eliminate insects and weeds, prompt the plants to thrive, timely harvest, shading and moisturizing after harvest, and timely delivery and sales. Seven, rust spots. Poorly soiled or poorly drained soil and unfermented manure applied before harvesting will cause a large number of pathogenic Fusarium to occur in the soil, infect the tender stems, and cause rust spots. It is strictly forbidden to apply organic fertilizer before culturing, and to prevent excessive soil moisture or water accumulation during shoot production and to strictly control watering techniques. Eight, scattered head. Mainly refers to the loosening of the top scales of the tender stems, which reduces the quality. High temperature and drought, plant senescence, pumping stems scattered head serious. To strengthen the management of water and fertilizer, to promote robust growth of plants, accumulation of adequate nutrients, so that the next year when the tender stems when the top scales tight packing is not easy to loose. In addition, varieties that are not easily dissipated should be used.