Z-Leu-ONB, or Z-leucine-9-fluorenylmethoxycarbonyl, is a synthetic peptide compound consisting of a leucine amino acid residue with a 9-fluorenylmethoxycarbonyl (Fmoc) protecting group. This protecting group is commonly used in solid-phase peptide synthesis to prevent unwanted side reactions during the coupling of amino acids. Z-Leu-ONB is a valuable intermediate in the synthesis of various peptides and proteins, as it allows for the controlled addition of leucine residues to a growing peptide chain. The Fmoc group can be selectively removed under mild conditions, enabling the sequential addition of other amino acids to form the desired peptide sequence.

53665-98-8

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Basic information
1. Product Name: Z-Leu-ONB
2. Synonyms:
3. CAS NO:53665-98-8
4. Molecular Formula:
5. Molecular Weight: 426.469
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-Leu-ONB(CAS DataBase Reference)
10. NIST Chemistry Reference: Z-Leu-ONB(53665-98-8)
11. EPA Substance Registry System: Z-Leu-ONB(53665-98-8)
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: 53665-98-8(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 53665-98-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,3,6,6 and 5 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 53665-98:
(7*5)+(6*3)+(5*6)+(4*6)+(3*5)+(2*9)+(1*8)=148
148 % 10 = 8
So 53665-98-8 is a valid CAS Registry Number.

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