青青青国产免费线在,国产成人综合亚洲,国产精品亚洲专一区二区三区 http://www.gengheonline.cn The Leading Supplier of China Amine Catalysts Tue, 28 May 2024 09:40:53 +0000 zh-CN hourly 1 https://wordpress.org/?v=6.1.7 http://www.gengheonline.cn/wp-content/uploads/2023/12/1.jpg L-cystathionine – Amine Catalysts http://www.gengheonline.cn 32 32 L-cystathionine http://www.gengheonline.cn/archives/49303 Tue, 28 May 2024 09:40:53 +0000 http://www.gengheonline.cn/archives/49303 L-cystathionine structural formula

Structural formula

Business number 0182
Molecular formula C7H14N2O4S
Molecular weight 222.26
label

(R)-S-(2-amino-2-carboxyethyl)-L-cysteine,

(R)-S-(2-Amino-2-carboxyethyl)-L-homocysteine

Numbering system

CAS number:56-88-2

MDL number:MFCD00036685

EINECS number:200-295-8

RTECS number:None

BRN number:2505200

PubChem number:24892965

Physical property data

1. Character: Crystal.


2. Density (g/mL,25/4℃) ： Undetermined


3. Relative vapor density (g/mL,AIR=1): Undetermined


4. Melting point (oC): 240 ～250℃（262~263℃).


5. Boiling point (oC,Normal pressure): Undetermined


6. Boiling point (oC,5.2kPa): undetermined


7. Refractive index: not OK


8. Flashpoint (oC): Undetermined


9. Specific optical rotation ( o): Undetermined


10. Spontaneous ignition point or ignition Combustion temperature (oC): not OK


11. Vapor Pressure (kPa,25oC): Undetermined


12. Saturated vapor pressure (kPa,60oC): Undetermined


13. Heat of combustion (KJ/mol): Undetermined


14. Critical temperature (oC): Undetermined


15. Critical Pressure (KPa): Undetermined


16. Oil and water (octanol /Water) partition coefficient pair Value: Undetermined


17. Explosion limit (%,V/V): Undetermined


18. Lower explosion limit (%,V/V): not OK


19. Solubility: Not available Sure.

Toxicological data

None yet

Ecological data

None yet

Molecular structure data

5. Molecular property data:


1. Molar refractive index: 52.59


2. Molar volume (m3/mol）：155.4


3. Isotonic specific volume (90.2K):457.7


4. Surface Tension (dyne/cm):75.2


5. Polarizability（10-24cm3): 20.84

Compute chemical data

1. Reference value for hydrophobic parameter calculation (XlogP): -6


2. Number of hydrogen bond donors: 4


3. Number of hydrogen bond acceptors: 6


4. Number of rotatable chemical bonds: 7


5. Number of tautomers:


6. Topological molecular polar surface area (TPSA):127


7. Number of heavy atoms: 14


8. Surface charge: 0


9. Complexity: 212


10. Number of isotope atoms: 0


11. Determine the number of atomic stereocenters: 2


12. The number of uncertain atomic stereocenters: 0


13. Determine the number of stereocenters of chemical bonds: 0


14. Uncertain number of chemical bond stereocenters: 0


15. Number of covalent bond units: 1

Properties and stability

None yet

Storage method

This product should be kept sealed.

Synthesis method

Generated by the interaction of o-succinyl homoserine and cysteine. Cystathionine is cystathionine beta–Lyase removes pyruvate and NH3generates homocysteine.

Purpose

For biochemical research.

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