2017年3月16日星期四

How to buy Casein


Product Name: Casein
CAS: 9000-71-9
Molecular Formula: C47H48N3NaO7S2
Description:
Casein (from the Latin case "cheese") is the predominant phosphoprotein (αS1, αS2, β, κ), which accounts for nearly 20% of milk proteins and cow cheese. Proteases of milk coagulation act on the part of soluble caseins, K-casein, in which an unstable micellar state arises, which leads to the formation of clots. When coagulated with chymosin, casein is sometimes called paracasein. Chymosin (EC 3.4.23.4) is an aspartic protease that specifically hydrolyzes the peptide bond in Phe105 Met106 of κ-casein, and as the most effective protease in the eastern cheese manufacturing industry (Rao et al., 1998). In contrast, British terminology uses the term caseinogen for uncoagulated proteins and casein for coagulated protein. Since it exists in milk, it is a calcium salt. Casein is coagulated not by heat. It is precipitated by acids and enzymes with rennets, a proteolytic enzyme that is typically recovered from calf stomachs. The trypsin enzyme can hydrolyze a peptone containing phosphate.
It is used to form a kind of organic glue.

1,3-Dihydroxyacetone dimer for sale


Product name:1,3-Dihydroxyacetone dimer
CAS:62147-49-3
Molecular Formula:C6H12O6
Formula Weight:180.16
Description:
Melting point:70.00 - 80.00 ºC
Boiling point:448 °C at 760 mmHg
Flash Point:224.7 °C
Density:1.546 g/cm3
Chemical property:white to off-white crystalline powder
Product Categories:Dioxanes; Dioxanes & Dioxolanes

oxacillin sodium monohydrate price


Product Name: oxacillin sodium monohydrate
CAS: 7240-38-2
Molecular Formula: C19H18N3NaO5S
Molecular Weight: 423.42
Description:
Boiling point: 686.8ºC to 760 mmHg
Flash point: 369.2 ° C
Chemical properties: white crystalline powder, minimum solubility in water, methanol, dimethyl sulfoxide, water-soluble ethanol, chloroform, acetone, butanol, does not dissolve in ether and benzene.
Application: It is mainly used for the treatment of Staphylococcus aureus infection

Picrolonic acid price


Product Name: Picrolonic acid
CAS: 550-74-3
Molecular formula: C10H8N4O5
Molecular Weight: 264.19
Description:
Picolinic acid is a pyridine derivative compound having a carboxyl side chain at position 2. It is an isomer of nicotinic acid, with the carboxyl side chain at position 3. It is a catabolite of tryptophan, an amino acid.

2, 3-Dichloro-6-nitrobenzonitrile for sale



Product Name: 2,3-Dichloro-6-nitrobenzonitrile

CAS: 2112-22-3

Molecular Formula: C7H2Cl2N2O2

Molecular Weight: 217.01

Description:

Melting point: 93-96 ° C

Boiling Point: 343.7 ° Cat760mmHg

Flash point: 161.6 ° C

Density: 1.61 g / cm3

Physical State: Solid

yellow color

Handling: Avoid breathing dust, vapor, mist or gas. Avoid all contact with skin and eyes.

Storage: cool and dry. Store in an airtight container.

General remarks: As in any fire, wear self-contained breathing apparatus pressure-demand, MSHA / NIOSH (or equivalent) and full protective gear.

Levocetirizine dihydrochloride price


Product Name: Levocetirizine dihydrochloride
CAS Number: 130018-87-0
Molecular Formula: C21H27Cl3N2O3
Molecular Weight: 461.81
Description:
Levocetirizine prevents the release of other allergy chemicals and increased blood supply in the area, and provides relief from symptoms typical of hay fever.
Melting point 215-220 ° C
Boiling point: 542.1ºC to 760 mmHg
Flash point: 281.6 ° C
Properties: A white or almost white crystalline powder, odorless
Solubility: It is very soluble in water, soluble in ethanol and methanol, insoluble in methylene chloride and acetone
Specific optical rotation: 9 ° 14 °
Content: ≥99.0% (calculated relative to the anhydrous substance)
Packing: 5kg / drum
Quality: CNS
Storage: Store in a tightly closed container

What is Isoferulic acid


Product Name: Isoferulic acid
CAS: 537-73-5
Molecular formula: C10H10O4
Molecular Weight: 194.18
Description:
Melting point: 230 ° C (dec.) (Illumination)
Boiling point: 410.2 ° C to 760 mmHg
Flash point: 167.6 ° C
Density: 1.316 g / cm³
Chemical properties: White to bronze crystals
Product Categories: pharmaceutical raw materials; Cinnamic aromatic acids, esters and derivatives;
Acids, aromatic compounds, aromatic compounds, C10, cinnamic carbonyl compounds