Phenylthiohydantoin lysine (PTH-Lys) is a chemical derivative of the amino acid lysine, which is obtained through a reaction with phenyl isothiocyanate. This process is part of the Edman degradation, a method used in peptide and protein sequencing. PTH-Lys is formed when the side chain of lysine is modified by the addition of a phenylthiohydantoin group. The resulting compound is then cleaved from the peptide chain, allowing for the identification of the lysine residue in the sequence. PTH-Lys is a colorless, crystalline solid that is soluble in organic solvents and plays a crucial role in the determination of protein and peptide sequences in biochemistry and molecular biology research.

5789-16-2

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Basic information
1. Product Name: PHENYLTHIOHYDANTOIN LYSINE)
2. Synonyms: PHENYLTHIOHYDANTOIN LYSINE);2-Thioxo-3-phenyl-5-(4-aminobutyl)imidazolidine-4-one;3-Phenyl-5-(4-aminobutyl)-2-thioxoimidazolidine-4-one;5-(4-Aminobutyl)-3-phenyl-2-thioxo-4-imidazolidinone;PTH-Lysine;α-PTH-DL-lysine
3. CAS NO:5789-16-2
4. Molecular Formula: C13H17N3OS
5. Molecular Weight: 263.35858
6. EINECS: N/A
7. Product Categories: N/A
8. Mol File: 5789-16-2.mol
Chemical Properties
1. Melting Point: N/A
2. Boiling Point: 387.4°C at 760 mmHg
3. Flash Point: 188.1°C
4. Appearance: /
5. Density: 1.27g/cm³
6. Vapor Pressure: 3.3E-06mmHg at 25°C
7. Refractive Index: 1.649
8. Storage Temp.: N/A
9. Solubility: N/A
10. CAS DataBase Reference: PHENYLTHIOHYDANTOIN LYSINE)(CAS DataBase Reference)
11. NIST Chemistry Reference: PHENYLTHIOHYDANTOIN LYSINE)(5789-16-2)
12. EPA Substance Registry System: PHENYLTHIOHYDANTOIN LYSINE)(5789-16-2)
Safety Data
1. Hazard Codes: N/A
2. Statements: N/A
3. Safety Statements: N/A
4. WGK Germany:
5. RTECS:
6. HazardClass: N/A
7. PackingGroup: N/A
8. Hazardous Substances Data: 5789-16-2(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 5789-16-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,7,8 and 9 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 5789-16:
(6*5)+(5*7)+(4*8)+(3*9)+(2*1)+(1*6)=132
132 % 10 = 2
So 5789-16-2 is a valid CAS Registry Number.

InChI:InChI=1/C13H17N3OS/c14-9-5-4-8-11-12(17)16(13(18)15-11)10-6-2-1-3-7-10/h1-3,6-7,11H,4-5,8-9,14H2,(H,15,18)

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