Notice: California Peptide and Echelon Biosciences have merged. California Peptide’s catalog has been integrated into the Echelon Biosciences website. Please view Echelon’s site in order to see California Peptide’s current items and pricing:

Ordering / Quote Request

To receive a quote for a custom peptide synthesis, please fill out the form below, then click the submit button. Please use the one-letter or three-letter amino acid codes starting with the N-terminus and ending with the C-terminus; be sure to designate your termini and any required modifications. Substitutions on the peptide can be denoted by using standard chemical abbreviations.

We typically respond to quote requests within 24 hours.

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Peptide Information
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Amino Acid Codes
Alanine A (Ala)
Arginine R (Arg)
Asparagine N (Asn)
Aspartic Acid D (Asp)
Cysteine C (Cys)
Glutamic Acid E (Glu)
Glutamine Q (Gln)
Glycine G (Gly)
Histidine H (His)
Isoleucine I (Ile)
Leucine L (Leu)
Lysine K (Lys)
Methionine M (Met)
Phenylalanine F (Phe)
Proline P (Pro)
Serine S (Ser)
Threonine T (Thr)
Tryptophan W (Trp)
Tyrosine Y (Tyr)
Valine V (Val)