Peroxydation et réaction intra-moléculaire Les huiles d’olive deviennent rance au cours du temps. Le rancissement est une modification chimique des structures moléculaire des huiles végétales. Les mêmes mécanismes chimiques opèrent aussi sur les huiles essentielles. La présence d’oxygène naturellement dissous dans les huiles, initie ces réactions chimiques. Elles s’accélèrent en présence de lumière, d’air, de sauts de température ou de diverses impuretés. Le mécanisme réactionnel de ce « vieillissement » se divise en deux étapes: la peroxydation et les réactions intramoléculaires (ou phase de propagation). La littérature scientifique décrit plusieurs exemples de peroxydation. Voici celui du linalol abondemment présent dans les huiles essentielles. (Exemple: lavande, lavandin, thym à linalol, bois de rose, sauge sclarée, etc). Dans ce shéma, le linalol subit en premier une peroxydation. Elle produit un nouveau composé: le 7-dydroperoxy-3,7-dimethyl-octa-1,5-diene-3-ol.

BACKENZYME: Amylasen EC 3.2.1.1 Cellulasen EC 3.2.1.4 Glukose-Oxidase Lipasen EC 3.1.1.3 Lipoxygenase Protease EC 3.4.21.112 Transglutaminase MILCHENZYME Chymosin EC 3.4.23.4 Laktase EC 3.2.1.23. Pepsin EC 3.4.23.1 Lipasen EC 3.1.1.3

Synonyms: 30-Noroleanane, (+)-Glycyram, 18β-Glycyrrhizic acid monoammonium salt, Ammonium glycyrrhizinate, Glycamil, Glycymin, Magnasweet, Monoammonium 18β-glycyrrhizinate Cat. Nr:NST-10-189 CAS:6754-58-1 Purity:98% (HPLC) Molecular formula:C21H22O5 Molecular weight:354,4

Molecular formulaC5H12O2 Molecular weight104.2 CAS number462-95-3 EC number207-330-6 IUPAC name(Ethoxymethoxy) ethane EC nameDiethoxymethane Molecular Formula:C5H12O2 Molecular weight:104.2 CAS Number:462-95-3 EC number:207-330-6 IUPAC name:(Ethoxymethoxy) ethane EC name:Diethoxymethane

Product group: Cellular Assays/ Detection-Labeling- kits CAS-Nr.: [2645-22-9] GHS pictogram: GHS07 Shipping condition: ambient MW: 220.32g/mol Formula: C10H8N2S2 CAS Nr:[2645-22-9] Code:P017

H2SO4

Unser Labor führt qualitative und quantitative Untersuchungen durch. Wir analysieren sowohl organische als auch anorganische Proben z. B. von Baustoffen auf Asbest, Metallen, Kunststoffen, Reinigungsmitteln und Ölen. Außerdem überprüfen wir für Sie Umweltproben wie z. B. Wasser, Trinkwasser oder Abfall, sowie Haushaltswaren, Bedarfsgegenständen, Textilien und Lebensmitteln.

Entellan - CHEMICALS PRODUCT CODE:BKEN00004 SIZE:1000 ML

Cadenas laterales utilizadas en la fabricación de amoxicilina y cefadroxilo.

Phenyl(benzeneseleno)sulfonate - Our Products Catalog Reference:100610 Molecular formula:C12H10O3SSe Molecular weight:313.2296

Wir bieten Wirkstoffe zum Einsatz in humanmedizinische oder veterinäre Arzneimittel mit entsprechender ausführlicher Dokumentation und Zertifizierung. Die Firma “Hommel” blickt auf eine fast 125 jährige Historie zurück. Wir liefern hochwertige Substanzen an die Pharma-, Lebensmittel- und Kosmetikindustrie. Hommel hat sich durch langjährige Erfahrung, hohe Flexibilität und stetige Zuverlässigkeit weltweit einen guten Ruf für seine Lieferung von Rohstoffen erworben. Unsere Kunden verlassen sich auf eine prompte und unkomplizierte Belieferung. Wir bieten Ihnen pharmazeutische Wirkstoffe sowie Hilfsstoffe und andere Substanzen aus unterschiedlichen Produktionen und oft mit mehreren Alternativen an. Unser Unternehmen verbindt langjährige Praxis mit moderner Technik und bietet Ihnen stets beste Qualität zu einem fairen Preis.

We offer calcium carbonat In guaranteed quality, at stable prices and packed appropriately for transportation. Do you need advice on choosing your product or are you looking for a suitable substitution? Our application and product experts are happy to help! Our experience and deep knowledge in the area of specialty chemicals and ingredients ensures that we are well positioned to effectively support both our customers and our suppliers with product and application expertise. Please contact us for more information!

Unsere Schwefelsäure 96 % rein ist eine hochwertige, konzentrierte Säurelösung, die durch ihre Reinheit und Zuverlässigkeit überzeugt. Mit einer Konzentration von 94-97 % und einer Dichte von mindestens 1,833 g/cm³ (gemessen bei 20°C), ist diese Schwefelsäure ideal für den industriellen Einsatz. Sie wird als klare bis leicht trübe, farblose Flüssigkeit geliefert und ist geruchlos. Chemische und Identifikationsdaten: CAS-Nr.: 7664-93-9 EG-Nr.: 231-639-5 REACH Reg.-Nr.: 01-2119458838-20 Unsere Schwefelsäure wird in stabilen Containern geliefert, die eine sichere Handhabung und Lagerung gewährleisten. Diese hochkonzentrierte Säure eignet sich für eine Vielzahl von Anwendungen, darunter chemische Synthesen, industrielle Reinigungsprozesse, Metallverarbeitung und als Katalysator in diversen chemischen Reaktionen. Reinheit und Analysen: Die Qualität der Schwefelsäure wird durch strenge Kontrollen gewährleistet, bei denen der Gehalt titrimetrisch geprüft wird. Darüber hinaus sind die Verunreinigungen minimal: Nickel (Ni): max. 1,0 ppm Kupfer (Cu): max. 1,0 ppm Blei (Pb): max. 5,0 ppm Arsen (As): max. 1,0 ppm Quecksilber (Hg): max. 0,5 ppm Eisen (Fe): max. 50 ppm

Product Identification Chemical name: 1,3-Dichloro-1,1,3,3-tetraisopropyldisiloxane Synonyms: 1,3-Dichloro-1,1,3,3-tetraisopropyldisiloxane, 69304-37-6, 1,3-Dichlorotetraisopropoxydisiloxane, Bis(chlorodiisopropylsilyl)ether CAS No.: 69304-37-6 Molecular formula: C12H28Cl2OSi2 Molecular weight: 315.43 Boiling point: 70 °C @ 0.5 mmHg Density: 0.986 g/mL Refractive index: 1.454 Specification Appearance: Colorless transparent liquid Purity: 97.00%min by GC Package Regular Packing: N.W 20kg/plastic drum Sample Packing: 0.1kg-1kg plastic bottle or under requests Transportation Information Classification: Class 8 dangerous goods UN 3265 PG II HS Code: 2931900090 Status & Application Status Commercial available Application 1,3-Dichloro-1,1,3,3-tetraisopropyldisiloxane [69304-37-6] is used for analytical nuclear Watson-Crick and Hoogstein base pairs in glycine and formation of ribavirin chemical delivery system.

Polyquaternium-7 is a quaternary ammonium compound used as an antistatic agent,fim former and hair fixative,in cosmetics and personal care products,the quaternary nitrogen atom in Polyquaternium-7 always carries cationic charge regardless of the pH of the system.At high pH,the presence of hydroxyl groups may reduce the normally high water solubility of quaternary ammonium compounds.The positive charge on the quats attracts them to the slightly negatively charged skin and hair proteins.Polyquaternium-7 prevents or inhibits the buildup of static electricity and dries to form a thin coating that is absorbed onto the hair shaft. Polyquaternium-7 also helps hair hold its style by inhibiting the hair's ability to absorb moisture. CAS. No:26590-05-6

Our research and development teams are permanently searching for ways to improve our surface protection films. New film components and new adhesive systems are developed to meet changing customer requirements in order to offer solutions which are “as good as necessary” and economical. One increasingly important area is the product range expansion of coextruded, uncoated films. About 50% of our research and development investment is allocated to this product group. This complements our experience with proven adhesive systems such as natural rubber adhesives, which present another core expertise of POLIFILM since decades. Our continuous investment in modern machinery and equipment generates benefits for our customers as well as for POLIFILM. Only these investment enable us to provide the optimum protection film quality for a wide range of applications served. Apart from a high and consistent product quality we pay attention to a professional application engineering support. This we ensure that the most suitable solution for the specific customer requirement will be identified systematically and in close dialogue with our customers, who appreciate this individual support and advice.

CAS: 910463-68-2 Formula: C187H291N45O59 Molecular Weight: 4113.58Da

D-Panthenol or Dexpanthenol is a precursor of vitamin B and a to phanthotenic acid belonging alcohol. The viscous, yellowish to clear product is produced synthetically. It is sensible to increased temperature and should be processed at a pH value between four and six. D-Panthenol is easily solube in water and ethanol and is unsoluble in fats and oils. Human bodies transform D-Panthenol to vitamin B5. CAS number:81-13-0 EINECS:201-327-3 Durability:2 years Storage:should be stored at a cool, dry and light shielded place in original packaging

Die Aixolution gewährleistet die Kontrolle und Überwachung aller Arbeitsschritte.

Methylhesperidin is a natural compound in the flavanone glycoside compound class. In nature, it can be most commonly found in citrus fruits together with its non methylated counterpart – hesperidin. Like hesperidin, it first was isolated from Citrus limon.sp. Cat. Nr:NST-10-128 CAS:11013-97-1 Purity:98% (HPLC) Molecular formula:C29H36O15 Molecular weight:624,59

Liquiritigenin - Flavonoids Cat. Nr:NST-10-173 CAS:578-86-9 Purity:95% (HPLC) Molecular formula:C15H12O4 Molecular weight:256,25

Syringic acid is a natural compound in the phenolic acid compound class. It is a common plant metabolite and can be found in various sources in nature like nuts, olives, pumpkin seeds, honey, red wine, and many more. It has also been used in traditional medicine from the extracts of shoebutton Ardisia Ardisia elliptica and others. Cat. Nr:NST-10-42 CAS:530-57-4 Purity:98% (HPLC) Molecular formula:C9H10O5 Molecular weight:198,17

Product group: Reagents CAS-Nr.: [85233-19-8] Shipping condition: ambient MW: 628.79g/mol Formula: C22H20K4N2O10?Anhydride CAS Nr:[85233-19-8] Code:B019 Manufacturers:Dojindo

Hesperitin is a natural compound in the flavanoid-type compound class. It is an aglycone version of widely spread hesperidin, which is available in various types of citrus fruits, most prominently in Citrus limon. sp. Cat. Nr:NST-10-120 CAS:69097-99-0 Purity:98% (HPLC) Molecular formula:C16H14O6 Molecular weight:302,28

Product group: DyesCellular Assays/ Detection-Labeling- kits CAS-Nr.: [771-97-1] Storing temperature: -20°C Shipping condition: ambient MW: 158.2g/mol Formula: C10H10N2 CAS Nr:[771-97-1] Code:D418

Entellan - CHEMICALS PRODUCT CODE:BKEN00003 SIZE:500 ML

Product Identification Chemical name: 2,2-Bis(4-hydroxyphenyl)hexafluoropropane Synonyms: Bisphenol AF, BPAF, Hexafluorobisphenol A, 4,4'-(Hexafluoroisopropylidene)diphenol CAS No.: 1478-61-1 Molecular formula: C15H10F6O2 Molecular weight: 336.23 Melting point: 159-163 ℃ Density: 0.791 g/mL Refractive index: 1.4316 Specification Appearance: White powder Purity: 99.50%min Phenol content: 0.10%max Moisture: 0.10%max The rate of whiteness: 90.0%min Methanol insoluble salts: 300 μg/g Package Regular Packing: N.W 25kg/fiber drum Sample Packing: 0.1kg-1kg foil bag Transportation Information Classification: Non dangerous goods HS Code: 2908199090 Status & Application Status: Industrial scale Application: 1) Fluoroelastic vulcanization promoter; 2) Crosslinker in fluoroelas rubber processing; 3) Preparation of flame retardant polycarbonate; 4) Preparation of Fluorinated polyimide resin;

We offer ascorbic acid In guaranteed quality, at stable prices and packed appropriately for transportation. Do you need advice on choosing your product or are you looking for a suitable substitution? Our application and product experts are happy to help! Our experience and deep knowledge in the area of specialty chemicals and ingredients ensures that we are well positioned to effectively support both our customers and our suppliers with product and application expertise. Please contact us for more information!

Cycloastragenol has been extensively studied for its properties on telomerase activation. Telomeres are a part of chromosomes scientists believe are responsible for cell aging and cycloastragenol is believed to probably inhibit maturation of cells. Cat. Nr:NST-10-159 CAS:78574-94-4 Purity:98% (HPLC) Molecular formula:C30H50O5 Molecular weight:490,72

Product Identification Chemical name: Vinyldimethylchlorosilane Synonyms: Dimethylvinylchlorosilane, Chlorodimethylvinylsilane, Vinylchlorodimethylsilane, Chloro(dimethyl)vinylsilane CAS No.: 1719-58-0 Molecular formula: C4H9ClSi Molecular weight: 120.65 Boiling point: 82-83 ºC Density: 0.874g/mL @ 25°C Refractive index: 1.414-1.417 Specification Appearance: Colorless transparent liquid Purity: 98.00%min by GC Color (APHA): 30 max Package Regular Packing: N.W 170kg/iron drum lined with plastic Sample Packing: 0.1kg-1kg plastic bottle or under request Transportation Information Classification: Class 3(8) dangerous goods UN 2895 PG II HS Code: 2931900090 Status Commercial available