20556-18-7 Usage
General Description
H-LYS-ASP-OH is a compound consisting of the amino acids lysine and aspartic acid connected by a peptide bond, with a carboxylic acid group at the end. Lysine is an essential amino acid with a positively-charged side chain, while aspartic acid is a non-essential amino acid with a negatively-charged side chain. When combined, they form a dipeptide with both positive and negative charges, making it a zwitterion. H-LYS-ASP-OH plays a role in protein synthesis and can be used in the study of peptide chemistry and biochemistry.
Check Digit Verification of cas no
The CAS Registry Mumber 20556-18-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,5,5 and 6 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 20556-18:
(7*2)+(6*0)+(5*5)+(4*5)+(3*6)+(2*1)+(1*8)=87
87 % 10 = 7
So 20556-18-7 is a valid CAS Registry Number.
InChI:InChI=1/C10H19N3O5/c11-4-2-1-3-6(12)9(16)13-7(10(17)18)5-8(14)15/h6-7H,1-5,11-12H2,(H,13,16)(H,14,15)(H,17,18)/p-2
20556-18-7Relevant articles and documents
Studies on separation of amino acids and related compounds. IV. Separation of diastereomeric tripeptides containing basic and acidic amino acid residue.
Muraoka,Yoshida,Noda,Izumiya
, p. 2134 - 2140 (1968)
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The Relationship between Taste and Primary Structure of "Delicious Peptide" (Lys-Gly-Asp-Glu-Glu-Ser-Leu-Ala) from Beef Soup
Tamura, Masahiro,Nakatsuka, Tohru,Tada, Makoto,Kawasaki, Yoshihiro,Kikuchi, Eiichi,Okai, Hideo
, p. 319 - 326 (2007/10/02)
"Delicious peptide" was reported to be as delicious as beef soup.The peptide and its fragments were synthesized to study its taste active sites. "Delicious peptide" was found to produce a umami and a sour taste.By preparing several di- or tripeptides composed of basic or acidic amino acids, we found that the taste of "delicious peptide" was produced by an interaction between the basic and the acidic fragments in the peptide.