Organic Intermediates

liquid crystal monomer 52364-73-5 Established in 2007, Qingdao QY Liquid Crystal Co., Ltd is a leading manufacturer specializing in high-quality nematic liquid crystals, primarily used in PDLC smart film and high grade of LC display. With over 18 years of nematic liquid crystals production expertise. Our LCs are widely exported to Europe, the United States, South Korea, and other global markets. The capable of our producing approximately 5000 kilograms per month. We signed the Exclusive Agency Agreement with our South Korean customer from 2011

Minimum Order: 20 square metres

CAS NO.:5306-85-4 Molecular formula :C8H14O4 Molecular weight :174.19436 Properties: Colorless liquid

Minimum Order: 1 bags

Molecular formula: C6H10O Indications: For the treatment of cerebral edema and glaucoma. Density: 1.475g/cm3 Melting point: 56-62℃ Boiling point: 372.1°C at 760 mmHg Flash point: 178.8°C Vapor pressure: 4.71E-07mmHg at 25°C Character: light yellow or white crystal

Minimum Order: 1 bags

PDLC Liquid Crystal Reactive monomers RM257 174063-87-7 RM257 174063-87-7 1,4-Bis-[4-(3-acryloyloxypropyloxy)benzoyloxy] , -2-methylbenzene C33H32O10 HPLC: 97% MIN. Established in 2007, Qingdao QY Liquid Crystal Co., Ltd is a leading manufacturer specializing in high-quality nematic liquid crystals, primarily used in PDLC smart film and high grade of LC display. With over 18 years of nematic liquid crystals production expertise. Our LCs are widely exported to Europe, the United States, South Korea, and other global markets. The capable of our producing approximately 5000 kilograms per month. We signed the Exclusive Agency Agreement with our South Korean customer from 2011

Minimum Order: 20 square metres

We have Pure Ephedrine Powder, Pseudoephedrine Powder,Roxycodone Powder for sale...Signal/:00852/5291/9765 Delivery is fast,safe and secured

Minimum Order: 100

Ethyl vinyl ether, with the chemical formula C4H8O, is a versatile compound. Ethyl vinyl ether was first synthesized and characterized in the early 20th century when chemists were exploring the reactivity of vinyl compounds and their derivatives. Its discovery helped expand the range of available ethers and provided new pathways for organic reactions. Ethyl vinyl ether has an ethoxy group (-OCH₂CH₃) attached to a vinyl group (-CH=CH₂). It is a colorless, volatile liquid with an ethereal odor. It has a boiling point of about 35°C and is soluble in organic solvents but slightly soluble in water. Ethyl vinyl ether is a versatile reagent in organic chemistry due to its ability to undergo a variety of transformations. It is often used in the synthesis of pharmaceuticals, agrochemicals, and fragrances. Its vinyl group is able to participate in polymerization and cross-coupling reactions, which expands its usefulness in the synthesis of complex organic molecules. As a specialty solvent, ethyl vinyl ether finds application in the polymer industry, particularly in the production of specialty resins and coatings. It can act as a cosolvent or reaction medium during polymerization, helping to form specific polymer structures and properties. Ethyl vinyl ether has been explored as a fuel additive. Its oxygen-containing functional groups can improve the combustion efficiency of fuels, thereby reducing emissions and improving fuel performance. Ethyl vinyl ether is extremely flammable and should be handled with care. Proper storage and handling procedures, including adequate ventilation and fire protection, are essential to reduce risks. Information on its acute toxicity is limited, but it is generally considered to be low. However, prolonged or repeated exposure may irritate the respiratory system and skin. Ethyl vinyl ether is biodegradable under aerobic conditions, although the specific degradation pathways may vary. Its environmental impact is primarily related to its flammability and potential as a volatile organic compound (VOC). Brand: Soarwin CAS No.:109-92-2 EC Number: 203-718-4 Molecular Formula: C4H8O Melting point : -116 ºC Boiling point: 36 ºC Flash point: -45 ºC

Minimum Order: 1 bags

Methyl Vinyl Ether is a reagent in the preparation of sodium alginate interpolymer complexes, pH-tunable drug carries.Copolymers used in coatings and lacquers; modifier for alkyl, polystyrene, and ionomer resins; plasticizer for nitrocellulose and adhesives. Brand: Soarwin CAS No.:107-25-5 EC Number: 203-475-4 Molecular Formula: C3H6O Density : 0.7440 Melting point : -122°C Boiling point: 6°C

Minimum Order: 1 bags

Glutaraldehyde, with the chemical formula C5H8O2, is a widely used compound. Glutaraldehyde was first synthesized in the early 1950s when researchers were searching for an effective sterilant and fixative for biological specimens. Its discovery marked a major advancement in chemical sterilization and preservation technology. Glutaraldehyde is an aliphatic dialdehyde consisting of a five- carbon chain with two aldehyde (-CHO) functional groups at the 1 and 5 positions. It is a colorless to pale yellow liquid with a pungent odor. Glutaraldehyde is soluble in water and many organic solvents and has good miscibility in aqueous solutions. Glutaraldehyde is widely used as a sterilant for medical devices and equipment due to its broad spectrum of antimicrobial activity against bacteria, viruses, fungi, and spores. It effectively crosslinks proteins and disrupts cellular structures, inactivating microorganisms and preventing their proliferation. In healthcare settings, glutaraldehyde solutions are used as high-level disinfectants for endoscopes, surgical instruments, and other heat-sensitive medical devices. These solutions ensure effective sterilization without compromising the integrity of delicate instruments. In addition to healthcare, glutaraldehyde is used in a variety of industrial processes, including water treatment, petroleum production, and papermaking. It is used as a biocide in cooling water systems, a cross-linking agent in leather tanning, and a preservative in cosmetics and personal care products. Glutaraldehyde is a valuable intermediate in the synthesis of pharmaceuticals, dyes, and polymers. It participates in reactions to form imines, acetals, and other functional derivatives that aid in the production of a variety of chemical compounds. Glutaraldehyde is toxic and irritates the skin, eyes, and respiratory system upon direct contact or inhalation. When handling concentrated solutions, appropriate personal protective equipment (PPE), such as gloves and goggles, should be worn. Used glutaraldehyde solutions require special handling procedures due to their biocidal properties. Prior to disposal, efforts should be made to neutralize or degrade residual glutaraldehyde to minimize environmental impact. Brand: Soarwin CAS No.:111-30-8 EC Number: 203-856-5 Molecular Formula: C5H8O2 Density : 1.058 g/mL at 20 °C Melting point : -15 °C Boiling point: 100 °C

Minimum Order: 1 bags

Stannous chloride is used as a sensitizing agent in preparing glass and plastic for metalizing. It serves as a potent reducing agent. Other uses of stannous chloride are tin electroplating baths, corrosion inhibitors, polymers, thermoplastic elastomers, soldering flux, antioxidant, tanning agent and pharmaceuticals. Brand: Soarwin CAS No.:10025-69-1 EC Number: 600-045-1 Molecular Formula: Cl2H4O2Sn Density : 2.71 Melting point : 37-38 °C (dec.)(lit.) Boiling point: 652 °C(lit.)

Minimum Order: 1 bags

Stannous Chloride is an antioxidant and preservative that exists as white or colorless crystals, being very soluble in water. it reacts read- ily with oxygen, preventing its combination with chemicals and foods which would otherwise result in discoloration and undesirable odors. it is used for color retention in asparagus at less than 20 ppm. it is also used in carbonated drinks. Brand: Soarwin CAS No.:7772-99-8 EC Number: 231-868-0 Molecular Formula: Cl2Sn Density : 3.95 Melting point : 246-624°C(lit.) Boiling point: 652°C(lit.) Flash point: 652°C

It is used as an intermediate in chemical processing and as a raw material for manufacturing bromine-based flame retardants. Brand: Soarwin CAS No.:7789-59-5 EC Number: 232-177-7 Molecular Formula: Br3OP Density : 2.82g/mLat 25°C(lit.) Melting point : 56°C(lit.) Boiling point: 192°C(lit.) Flash point: 189°C

Minimum Order: 1 bags

3,8-Dihydroxy-6H-dibenzo[b,d]pyran-6-one, commonly referred to as emodin, is a naturally occurring anthraquinone derivative found in various plant species, including rhubarb, buckthorn, and senna. Its distinctive structure, consisting of a fused dibenzo[b,d]pyranone ring system with hydroxyl groups at the 3- and 8-positions, contributes to its diverse biological activities and makes it a significant compound in both natural product chemistry and medicinal research. The history of emodin traces back to traditional medicine, where plants containing this compound were employed for their laxative and anti-inflammatory properties. Early chemical investigations in the 19th century isolated emodin from rhubarb root, and subsequent studies elucidated its structure through advances in spectroscopy and crystallography. Its name derives from *Rheum emodi*, a plant species recognized as a primary source of this compound. Emodin exhibits a range of pharmacological effects due to its ability to interact with multiple biological pathways. It is best known for its laxative properties, attributed to its influence on gastrointestinal motility. Additionally, emodin has demonstrated potential as an anti-inflammatory, antimicrobial, and anticancer agent. Studies suggest that it exerts these effects by modulating enzymes, signaling proteins, and transcription factors, such as nuclear factor kappa B (NF-κB) and mitogen-activated protein kinases (MAPKs). In modern applications, emodin has attracted interest for its role in cancer therapy research. Preclinical studies have indicated its ability to inhibit tumor cell proliferation, induce apoptosis, and suppress metastasis in various cancer models, including colorectal, breast, and lung cancers. These effects are linked to its interaction with pathways regulating cell cycle and oxidative stress. Furthermore, emodin's potential antiviral activity has been explored, particularly against coronaviruses and herpes simplex virus, providing avenues for therapeutic development. Beyond medicine, emodin has been investigated for its use as a natural dye due to its vibrant coloration and chemical stability. In the food and cosmetics industries, it is used as a natural additive, although its safety and dosage must be carefully regulated due to its potent biological activity. While the therapeutic potential of 3,8-Dihydroxy-6H-dibenzo[b,d]pyran-6-one is promising, challenges remain regarding its bioavailability, solubility, and toxicity at high doses. Ongoing research focuses on developing derivatives and formulations to enhance its efficacy and safety profile for clinical applications. Brand: Soarwin CAS No.:1143-70-0 EC Number: 881-478-5 Molecular Formula: C13H8O4 Density : 1.516±0.06 g/cm3 (20 ºC 760 Torr) Melting point : 340-345 ºC Boiling point: 527.9±43.0 ºC (760 mmHg) Flash point: 214.2±21.7 ºC

Minimum Order: 1 bags

Bilirubin is a yellow breakdown product of heme catabolism, formed when heme is cleaved by heme oxygenase. This reaction produces carbon monoxide and biliverdin, which is rapidly reduced to bilirubin by biliverdin reductase. Bilirubin has key roles as a free radical scavenger with antioxidant and anti- inflammatory actions. Free and albumin-bound bilirubin can also scavenge nitric oxide (NO) and NO-related species. Unconjugated bilirubin is highly water- insoluble and must be conjugated with glucuronides to become water soluble and subsequently excreted by the liver and kidney. Brand: Soarwin CAS No.:635-65-4 EC Number: 211-239-7 Molecular Formula: C33H36N4O6 Density : 1.374 g/cm3 Melting point : 192 °C Boiling point: 925.2ºC at 760 mmHg Flash point: 513.3ºC

Minimum Order: 1 bags

NADPH is the reduced form of the coenzyme NADP+; used in anabolic reactions such as lipid and nucleic acid synthesis, which require NADPH as a reducing agent. NADPH, Tetrasodium Salt is a A ubiquitous coenzyme that acts as an electron donor in many reactions utilizing dehydrogenase and reductase enzymes. It is generated by reduction of the electron acceptor NADP+. The following biological pathways involve NADPH: formation of carbohydrate from CO2 during photosynthesis, maintenance of high levels of reduced glutathione in erythrocytes, reduction of thioredoxin. Brand: Soarwin CAS No.:2646-71-1 EC Number: 220-163-3 Molecular Formula: C21H31N7NaO17P3 Density : 2.28 g/cm C Melting point : >250oC (dec.) Boiling point: 1175.1oC at 760 mmHg Flash point: 664.5 ºC

Minimum Order: 1 bags