Z-Met-Asp(OtBu)-Phe-OEt is a synthetic peptide consisting of four amino acid residues: Z-Met (N-benzyloxycarbonyl-methionine), Asp(OtBu) (N-benzyloxycarbonyl-aspartic acid with a tert-butyl ester), Phe (phenylalanine), and OEt (ethanol). This peptide is characterized by its unique structure, where the aspartic acid residue is modified with a tert-butyl ester group, which can protect the carboxylic acid group during peptide synthesis. The presence of the Z-group (benzyloxycarbonyl) on the N-terminus of methionine serves as a protecting group, preventing unwanted side reactions. The ethanol group at the C-terminus provides solubility and stability to the peptide. Z-Met-Asp(OtBu)-Phe-OEt is often used in peptide synthesis research and as a building block for the development of novel bioactive compounds.

66638-70-8

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Basic information
1. Product Name: Z-Met-Asp(OtBu)-Phe-OEt
2. Synonyms:
3. CAS NO:66638-70-8
4. Molecular Formula:
5. Molecular Weight: 629.775
6. EINECS: N/A
7. Product Categories: N/A
Chemical Properties
1. Melting Point: N/A
2. Boiling Point: N/A
3. Flash Point: N/A
4. Appearance: N/A
5. Density: N/A
6. Refractive Index: N/A
7. Storage Temp.: N/A
8. Solubility: N/A
9. CAS DataBase Reference: Z-Met-Asp(OtBu)-Phe-OEt(CAS DataBase Reference)
10. NIST Chemistry Reference: Z-Met-Asp(OtBu)-Phe-OEt(66638-70-8)
11. EPA Substance Registry System: Z-Met-Asp(OtBu)-Phe-OEt(66638-70-8)
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: 66638-70-8(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 66638-70-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,6,3 and 8 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 66638-70:
(7*6)+(6*6)+(5*6)+(4*3)+(3*8)+(2*7)+(1*0)=158
158 % 10 = 8
So 66638-70-8 is a valid CAS Registry Number.

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