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"Z-D-Val-L-HyIv-Val-D-Lac-D-Val-L-HyIv-Val-D-Lac-OtBu" is a complex peptide sequence consisting of multiple amino acids and a protecting group. The sequence starts with Z-D-Val, indicating a D-valine (D-isomer of valine) with a Z protecting group, which is commonly used in peptide synthesis to prevent unwanted side reactions. This is followed by L-HyIv, the L-isomer of hydroxyisoleucine, a non-proteinogenic amino acid. The sequence alternates between D-valine, L-HyIv, and D-lactic acid (D-Lac), with another D-valine and L-HyIv at the end. The OtBu group at the end is a tert-butyloxycarbonyl protecting group, which is used to protect the carboxyl group during peptide synthesis. This peptide sequence is likely to be a part of a larger peptide or protein structure, with the specific arrangement and protecting groups indicating a tailored synthesis process for a particular application in biochemistry or pharmaceuticals.

31518-70-4

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31518-70-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 31518-70-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,5,1 and 8 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 31518-70:
(7*3)+(6*1)+(5*5)+(4*1)+(3*8)+(2*7)+(1*0)=94
94 % 10 = 4
So 31518-70-4 is a valid CAS Registry Number.
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