Model No.: LYN-51-35-4
Place of Origin: Shandong, China (Mainland)
Supply Ability: in stock
Certificate: ISO CE
HS Code: 51-35-4
Hydroxyproline (English:Hydroxyproline), also known as (2S,4R)-4-hydroxyproline, or L-hydroxyproline (C5H9O3N), is a common non-standard protein amino acid, and its The abbreviation is HYP.
The hair was hydrolyzed with hydrochloric acid for 6 to 8 hours, hydrochloric acid was distilled off under reduced pressure, decolorized with activated carbon, filtered, and the filtrate was neutralized with ammonia to obtain crude crystals of L-cystine, and then recrystallized from aqueous ammonia to obtain L-cystine. Further, L-cystine is used as a raw material, and L-cysteine can be obtained by reduction, and there are two methods. Tin particle reduction method. Dissolve L-cystine in dilute hydrochloric acid, add tin particles and heat up to reflux for 2h, filter out the remaining tin particles in the reducing solution, dilute with water, then saturate with hydrogen sulfide; filter, filter residue with a small amount of water The washing liquid and the filtrate were combined, concentrated under reduced pressure, cooled, crystallized, separated and dried to give L-cysteine hydrochloride. HOOCCH(N
H2) CH2SSCH2CH (N
H2) COOH+Sn[HCl, H2S→HSCH2CH(N
H2) COOH·CHl electrolytic reduction method L-cystine and dilute hydrochloric acid are added to the electrolytic cell, stirred and dissolved, and electrolyzed at 50 ° C; the electrolyte is saturated with hydrogen sulfide for several hours to be saturated; filtered, the filtrate is decolorized by activated carbon, decolorized The liquid was concentrated under reduced pressure, cooled and crystallized, separated and dried to obtain L-cysteine hydrochloride, and 0.7 t of cystine and 1 t of hydrochloric acid were consumed per ton of product.
Pharmaceutical intermediates and food additives.
25 kg box/bag/drums
Transit could be DHL,UPS,TNT,EMS,Fedex,and so on.
For mass orders, it will be delivered by air or sea.
your location, please allow 1-5 business days for your order to arrive.
For small order, please expect 3-7 days by UPS DHL EMS.
For mass order, please allow 5-8 days by Air, 15-30 days by Sea.
1> Cosmetic Raw Materials: Cosmetics is a variety of raw materials through a reasonable deployment of processing from the compound mixture. Cosmetics with a wide range of raw materials, different performance. According to the Raw Material properties and uses of cosmetics, can be divided into matrix materials and auxiliary raw materials in two categories.
2> Active Pharmaceutical Ingredients(API): API refers to the raw materials in the production of various types of preparations, which is the active ingredient in powder,crystal and paste for medicine use through chemical synthesis,plant extract, and preparations of biotechnology institute.
3> Fragrance And Spices: Spices are an important part of fine chemicals, it is composed of natural spices, synthetic spices and single fragrance.
4> Organic Raw Material: Intermediates are also known as organic intermediates. The use of coal tar or petroleum products as raw materials to produce dyes, resins, additives, and other intermediates.
5> Chemicals Used In Paints: Paint, the traditional Chinese name is paint. So-called coating is coated on the surface of the object that be protected or be adornment, and with the continuous film coating to form strong adhesion.
6> Pharmaceutical Intermediates: The so-called pharmaceutical intermediates, refers to the production of pharmaceutical products in the process, the use of raw materials, materials, accessories and other intermediate products.
7> Agricultural Chemicals: Research and agriculture related chemical, including pesticide, plant growth regulator, fertilizer, compound fertilizer, herbicide etc.