Catalogue / Amino Acids & Peptides

Amino Acids & Peptides Catalogue

Building blocks and peptide fragments for synthesis, SPPS, and research. Browse products by CAS, protection group, and sequence.

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Boc-L-glutamic acid 1-tert-butyl ester

Protected amino acid • ≥98% (TLC)

CAS No.: 24277-39-2
Molecular Weight: 303.35
Empirical Formula: C14H25NO6
Product No.: CCS-AP-10001
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Boc-D-glutamic acid 1-tert-butyl ester

Protected amino acid • ≥98% (NMR)

CAS No.: 73872-71-6
Molecular Weight: 303.36
Empirical Formula: C14H25NO6
Product No.: CCS-AP-10002
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Fmoc-L-glutamic acid 5-tert-butyl ester

Protected amino acid • ≥99.0% (HPLC)

CAS No.: 84793-07-7
Molecular Weight: 425.47
Empirical Formula: C24H27NO6
Product No.: CCS-AP-10003
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Fmoc-D-glutamic acid 5-tert-butyl ester

Protected amino acid • ≥99.5% (Chiral HPLC)

CAS No.: 104091-08-9
Molecular Weight: 425.47
Empirical Formula: C24H27NO6
Product No.: CCS-AP-10004
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(S)-1-Boc-4-(aminocarboxymethyl)piperidine

Protected amino acid derivative • ≥97% (HPLC)

CAS No.: 368866-11-9
Molecular Weight: 258.31
Empirical Formula: C12H22N2O4
Product No.: CCS-AP-10005
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O-Nitropiperonyl-O-tyrosine

Photocaged amino acid

CAS No.: —
Molecular Weight: 360.32
Empirical Formula: C17H16N2O7
Product No.: CCS-AP-10006
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D-Serine

Amino acid • ≥98% (TLC)

CAS No.: 312-84-5
Molecular Weight: 105.09
Empirical Formula: C3H7NO3
Product No.: CCS-AP-10007
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D-Serine methyl ester hydrochloride

Amino acid derivative • 98%

CAS No.: 5874-57-7
Molecular Weight: 155.58
Linear Formula: HOCH2CH(NH2)CO2CH3·HCl
Product No.: CCS-AP-10008
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Fmoc-Leu-(Dmb)Gly-OH

Protected dipeptide • ≥98% (TLC), ≥97.5% (HPLC)

CAS No.: 1446752-61-9
Molecular Weight: 560.64
Empirical Formula: C32H36N2O7
Product No.: CCS-AP-10009
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Fmoc-Glu(OtBu)-(Dmb)Gly-OH

Protected dipeptide • ≥98% (TLC), ≥97% (HPLC)

CAS No.: —
Molecular Weight: 632.70
Empirical Formula: C35H40N2O9
Product No.: CCS-AP-10010
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Fmoc-Ala-Thr(psiMe,Mepro)-OH

Pseudoproline dipeptide building block (for SPPS)

CAS No.: 252554-79-3
Molecular Weight: 452.50
Empirical Formula: C25H28N2O6
Product No.: CCS-AP-10011
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Fmoc-Arg(Pbf)-Ser(Psi(Me,Me)pro)-OH

Pseudoproline dipeptide building block (Arg-Ser pseudoproline)

CAS No.: 2108145-17-9
Molecular Weight: 775.92
Empirical Formula: C40H49N5O9S
Product No.: CCS-AP-10012
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Fmoc-N-Me-Leu-OH

N-Methyl-Leucine building block • ≥ 99% (HPLC), TLC/HPLC ≥ 98%

CAS No.: 103478-62-2
Molecular Weight: 367.44
Empirical Formula: C22H25NO4
Product No.: CCS-AP-10013
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t-Boc-N-amido-PEG₂-CH₂CO₂H

Speciality chemical • ≥95%

CAS No.: 108466-89-3
Molecular Weight: 263.29
Empirical Formula: C11H21NO6
Product No.: CCS-AP-10014
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Boc-8-amino-3,6-dioxaoctanoic acid DCHA

PEG spacer (DCHA salt) • ≥95%

CAS No.: 560088-79-1
Molecular Weight: 263.29
Empirical Formula: C11H21NO6 · C12H23N
Product No.: CCS-AP-10015
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Fmoc-NH-(PEG)-COOH

For peptide synthesis • ≥99.0% (HPLC)

CAS No.: 166108-71-0
Molecular Weight: 385.41
Empirical Formula: C21H23NO6
Product No.: CCS-AP-10016
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Boc-AEEA-AEEA

PEG spacer di-acid (HPLC-grade) • ≥99% (HPLC)

CAS No.: 1069067-08-8
Molecular Weight: 408.4
Empirical Formula: C17H32N2O9
Product No.: CCS-AP-10017
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Fmoc-L-Lys(Boc-AEEA)-OH

Protected amino acid • ≥99% (HPLC)

CAS No.: 1662688-16-5
Molecular Weight: 613.7
Empirical Formula: C32H43N3O9
Product No.: CCS-AP-10018
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Semaglutide intermediate

Peptide modifier (Semaglutide side-chain linker) • ≥97% (HPLC)

CAS No.: 1118767-15-9
Molecular Weight: 943.17
Empirical Formula: C47H82N4O15
Product No.: CCS-AP-10019
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(S)-22-(tert-Butoxycarbonyl)-43,43-dimethyl-10,19,24,41-tetraoxo-3,6,12,15,42-pentaoxa-9,18,23-triazatetratetracontanoic acid

Peptide modifier • ≥95% (HPLC)

CAS No.: 1118767-16-0
Molecular Weight: 846.11
Empirical Formula: —
Product No.: CCS-AP-10020
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Fmoc-L-Lys[Oct-(OtBu)-Glu-(OtBu)-AEEA-AEEA]-OH

Peptide modifier • ≥95% (HPLC)

CAS No.: 1662688-20-1
Molecular Weight: —
Empirical Formula: —
Product No.: CCS-AP-10021
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Boc-His(Trt)-Aib-OH

Protected amino acid • ≥95% (HPLC)

CAS No.: 2061897-68-3
Molecular Weight: 582.7
Empirical Formula: —
Product No.: CCS-AP-10022
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Fmoc-Trp(Boc)-OH

Protected amino acid • ≥97.0% (HPLC)

CAS No.: 143824-78-6
Molecular Weight: 526.58
Empirical Formula: C31H30N2O6
Product No.: CCS-AP-10023
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Fmoc-D-Trp(Boc)-OH

Protected amino acid • ≥95.0% (HPLC)

CAS No.: 163619-04-3
Molecular Weight: 526.58
Empirical Formula: C31H30N2O6
Product No.: CCS-AP-10024
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Fmoc-L-Thr(tBu)-ol

Protected amino acid • ≥97% (HPLC)

CAS No.: 189337-28-8
Molecular Weight: 411.48
Empirical Formula: C24H29NO5
Product No.: CCS-AP-10025
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