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CAS 55757-46-5

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N-(tert-butoxycarbonyl)-L-cysteine methyl ester,

Description:
N-(tert-butoxycarbonyl)-L-cysteine methyl ester, with the CAS number 55757-46-5, is a derivative of the amino acid cysteine, modified to include a tert-butoxycarbonyl (Boc) protecting group and a methyl ester functionality. This compound is typically used in peptide synthesis and organic chemistry as a building block due to its ability to protect the thiol group of cysteine, which is prone to oxidation and can participate in unwanted side reactions. The tert-butoxycarbonyl group provides stability and facilitates the selective deprotection of the amino group under mild acidic conditions. The methyl ester enhances the solubility of the compound in organic solvents, making it easier to handle in synthetic procedures. N-(tert-butoxycarbonyl)-L-cysteine methyl ester is generally characterized by its white to off-white crystalline appearance and is soluble in common organic solvents. Its reactivity and stability make it a valuable intermediate in the synthesis of peptides and other bioactive molecules, particularly in the field of medicinal chemistry and drug development.
Formula:C9H17NO4S
InChI:InChI=1/C9H17NO4S/c1-9(2,3)14-8(12)10-6(5-15)7(11)13-4/h6,15H,5H2,1-4H3,(H,10,12)/t6-/m0/s1
Synonyms:
  • methyl N-(tert-butoxycarbonyl)-L-cysteinate
  • N-(tert-Butoxycarbonyl)-L-cysteine methyl ester
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