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"Z(OMe)-Lys(Z)-Tyr-NH-NH2" is a peptide compound consisting of four amino acid residues: Z(OMe)-Lys, Z-Lys, Tyr, and NH-NH2. Z(OMe)-Lys refers to lysine with a benzyloxycarbonyl (Z) protecting group and a methoxy group (OMe) on the side chain, while Z-Lys is lysine with a Z protecting group. Tyr represents the amino acid tyrosine. The NH-NH2 group at the end indicates that the peptide has a free amino group, making it an open-chain peptide. This specific sequence and structure may have unique properties and potential applications in fields such as pharmaceuticals, biochemistry, and materials science, depending on the specific context in which it is used.

81657-18-3

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81657-18-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81657-18-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,6,5 and 7 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 81657-18:
(7*8)+(6*1)+(5*6)+(4*5)+(3*7)+(2*1)+(1*8)=143
143 % 10 = 3
So 81657-18-3 is a valid CAS Registry Number.

81657-18-3Relevant academic research and scientific papers

Synthesis and activity of a newly isolated analgesic pentapeptide, neo-kyotorphin

Kitagawa,Kawai,Kiso,Akita,Fukui,Amano,Takagi

, p. 2349 - 2352 (2007/10/02)

A newly isolated bovine brain pentapeptide, Thr-Ser-Lys-Tyr-Arg (neo-kyotorphin), which contains the Tyr-Arg (kyotorphin) unit at its carboxyl terminal portion, was synthesized by using the TFMSA-TFA-thioanisole deprotecting procedure. The synthetic pepti

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