Z-Arg(Mbs)-OtBu is a chemical compound that consists of a protected arginine residue, where the arginine is modified with a 4-methylbenzenesulfonyl (Mbs) group and a tert-butyl (tBu) protecting group. Z-Arg(Mbs)-OtBu is commonly used in peptide synthesis, particularly in solid-phase peptide synthesis (SPPS), to protect the side chain of arginine during the assembly of peptide sequences. The Mbs group is a bulky protecting group that shields the guanidinium group of arginine, preventing unwanted side reactions, while the tBu group protects the amino group of the arginine side chain. Once the peptide is synthesized, the protecting groups can be removed under specific conditions to yield the desired unprotected peptide. Z-Arg(Mbs)-OtBu plays a crucial role in ensuring the correct formation of peptide bonds and maintaining the integrity of the peptide sequence during the synthesis process.

90303-67-6

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Basic information
1. Product Name: Z-Arg(Mbs)-OtBu
2. Synonyms:
3. CAS NO:90303-67-6
4. Molecular Formula:
5. Molecular Weight: 534.634
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-Arg(Mbs)-OtBu(CAS DataBase Reference)
10. NIST Chemistry Reference: Z-Arg(Mbs)-OtBu(90303-67-6)
11. EPA Substance Registry System: Z-Arg(Mbs)-OtBu(90303-67-6)
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: 90303-67-6(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 90303-67-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,3,0 and 3 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 90303-67:
(7*9)+(6*0)+(5*3)+(4*0)+(3*3)+(2*6)+(1*7)=106
106 % 10 = 6
So 90303-67-6 is a valid CAS Registry Number.

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