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Pharmaceutical Division

Protected Amino Acid Building Blocks

Essential intermediates for solid-phase peptide synthesis, drug development, and biomedical research applications.

✓Boc & Fmoc Range
✓COA & MSDS
✓Synthesis Ready

Our protected amino acid building blocks include Boc-protected, Fmoc-protected, and specialized amino acid derivatives for peptide synthesis and pharmaceutical research, supplied with documentation aligned to stringent quality requirements.

Showing 20 of 88 products
Protected amino acid building blocks presented for faster review and sourcing clarity.Building Block Catalog
Product NameCategoryCAS Number

Nα-Fmoc-L-lysine hydrochloride

Fmoc-Protected139262-23-0

Nε-Boc-L-lysine butyl ester hydrochloride

Boc-Protected13288-57-8

Nε-Boc-L-lysine methyl ester hydrochloride

Boc-Protected2389-48-2

Nα-Cbz-Nε-Boc-L-lysine

Boc-Protected2389-60-8

Nα-Fmoc-Nε-Boc-L-lysine

Fmoc-Protected159766-56-0

Nα-Fmoc-Nε-Boc-L-lysine

Fmoc-Protected71989-26-9

N-Fmoc-α-aminoisobutyric acid

Fmoc-Protected94744-50-0

N-Boc-α-aminoisobutyric acid

Boc-Protected30992-29-1

N-Fmoc-L-phenylalanine

Fmoc-Protected35661-40-6

N-Boc-L-phenylalanine methyl ester

Boc-Protected51987-73-6

N-[(4-Methylphenyl)sulfonyl]phenylalanine

Other Protected13505-32-3

N-Fmoc-glycine

Fmoc-Protected29022-11-5

N-Boc-glycine tert-butyl ester

Boc-Protected111652-20-1

N-Fmoc-L-alanine

Fmoc-Protected35661-39-3

N-Boc-N-methylalanine

Boc-Protected16948-16-6

N2-Boc-N1-Cbz-(S)-2,3-diaminopropionic acid

Boc-Protected65710-57-8

N-Fmoc-L-leucine

Fmoc-Protected35661-60-0

N-Cbz-N-methyl-L-leucine

Cbz-Protected33099-08-0

N-Fmoc-L-isoleucine

Fmoc-Protected71989-23-6

N-Fmoc-L-valine

Fmoc-Protected68858-20-8

Quality Assurance

All protected amino acid building blocks are supplied with Certificate of Analysis (COA) and Material Safety Data Sheet (MSDS). Our products meet stringent quality standards and are suitable for peptide synthesis, pharmaceutical research, and development applications. For specific regulatory documentation or custom requirements, please contact our technical support team.

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