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Peptide Property Database

A comprehensive master reference table of physicochemical and analytical properties for all peptides in the AMP Peptide Research Database. This table consolidates molecular parameters, stability data, solubility characteristics, and quality control specifications for 25+ compounds across all research categories.

🔗 Categories Covered

# Category Count Peptides
1 Neurocognitive 4 Semax, Selank, Noopept, Cerebrolysin
2 Sleep & Pineal 2 Epitalon, Pinealon
3 Growth & Signaling 6 MK-677, Ipamorelin, GHRP-2, GHRP-6, CJC-1295, Sermorelin
4 GLP-1 Agonists 3 Tirzepatide, Retatrutide, Semaglutide
5 Cosmetic & Topical 5 GHK-Cu, Matrixyl, Argireline, Matrixyl 3000, SNAP-8
6 Tissue Repair 2 BPC-157, TB-500
7 Mitochondrial 4 MOTS-c, SS-31, Humanin, AOD-9604

1. Neurocognitive Peptides

Property Semax Selank Noopept Cerebrolysin
CAS Number 80714-61-0 129954-34-3 157115-85-0 N/A (mixture)
Molecular Formula C₃₇H₅₃N₉O₁₀S C₃₃H₅₇N₁₁O₉ C₁₇H₂₂N₂O₄ N/A
Molecular Weight (Da) 706.83 756.89 342.39 120–10,000
Sequence Length 7 aa 7 aa N/A (dipeptide) Peptide cocktail
Sequence (1-letter) MEHFPGP TKPRPGP N/A Multiple fragments
pI ~5.8 ~9.8 N/A ~6.5
logP −3.2 −3.0 +0.8 Variable
Water Solubility > 40 mg/mL > 40 mg/mL ~2 mg/mL Pre-mixed solution
Physical State Lyophilized powder Lyophilized powder Crystalline powder Sterile solution
Appearance White to off-white White to off-white White crystalline Clear, colorless
Purity (HPLC) ≥ 98% ≥ 98% ≥ 99% Fingerprint QC
pH Range (Stable) 5.0–7.0 5.0–7.0 5.5–7.5 6.5–7.0
Storage (Lyophilized) −20°C −20°C 2–8°C 15–25°C
Shelf Life (Lyophilized) 24+ months 24+ months 36+ months 36 months
Storage (Reconstituted) 2–8°C / 7 days 2–8°C / 7 days 2–8°C / 14 days Single use
Half-life ~30 min ~20 min ~2–5 h ~4–6 h
Light Sensitivity Moderate Moderate Low Low

2. Sleep & Pineal Peptides

Property Epitalon Pinealon
CAS Number 307997-66-2 292422-98-9
Molecular Formula C₁₄H₂₂N₄O₉ C₁₅H₂₆N₆O₈
Molecular Weight (Da) 375.35 431.41
Sequence Length 4 aa 3 aa
Sequence (1-letter) AEDG EDR
Sequence (3-letter) Ala-Glu-Asp-Gly Glu-Asp-Arg
pI ~4.1 ~6.5
logP −3.5 −3.8
Water Solubility > 50 mg/mL > 40 mg/mL
Physical State Lyophilized powder Lyophilized powder
Purity (HPLC) ≥ 98% ≥ 98%
pH Range (Stable) 5.0–7.5 5.0–7.5
Storage (Lyophilized) −20°C −20°C
Shelf Life (Lyophilized) 24+ months 24+ months
Storage (Reconstituted) 2–8°C / 7 days 2–8°C / 7 days
Half-life ~30–60 min ~20–40 min
C-Terminal Free acid (Gly-OH) Free acid (Arg-OH)

3. Growth & Signaling Peptides

Property MK-677 Ipamorelin GHRP-2 GHRP-6 CJC-1295 Sermorelin
CAS Number 159634-47-0 170851-70-4 157026-82-1 142640-99-9 863288-34-8 86168-78-7
Molecular Formula C₂₇H₃₆N₄O₅S C₃₈H₄₉N₉O₅ C₄₅H₅₄N₁₂O₆ C₄₆H₅₆N₁₂O₆ C₁₅₂H₂₅₂N₄₄O₄₂ C₁₅₃H₂₅₃N₄₅O₄₂S
MW (Da) 528.7 711.9 786.9 873.0 3315.7 3357.9
Type Non-peptide Pentapeptide Hexapeptide Hexapeptide 30 aa 29 aa
pI N/A ~9.5 ~9.8 ~10.2 ~9.2 ~9.0
logP +3.2 −2.1 −2.0 −1.8 −1.5 −2.5
Solubility ~0.1 mg/mL (water) > 30 mg/mL > 30 mg/mL > 30 mg/mL > 20 mg/mL > 20 mg/mL
Purity ≥ 99% ≥ 98% ≥ 98% ≥ 98% ≥ 98% ≥ 98%
Storage (Lyo) 2–8°C −20°C −20°C −20°C −20°C −20°C
Shelf Life 24+ months 24+ months 24+ months 24+ months 24+ months 24+ months
Half-life ~24 h ~2 h ~30 min ~30 min ~6–8 days ~12 min

4. GLP-1 Receptor Agonists

Property Tirzepatide Retatrutide Semaglutide
CAS Number 2023788-19-2 2381088-14-0 910463-68-2
Molecular Formula C₂₂₅H₃₄₈N₄₈O₆₈ C₂₂₉H₃₅₆N₅₀O₆₈ C₁₈₇H₂₉₁N₄₅O₅₉
MW (Da) 4813.5 4872.5 4113.6
Sequence Length 39 aa (modified) 39 aa (modified) 31 aa (modified)
pI ~6.2 ~6.0 ~4.5
logP −1.8 −1.6 −1.2
Purity ≥ 98% ≥ 98% ≥ 99%
Half-life ~5 days ~6 days ~7 days (SC)
Storage (Lyophilized) −20°C −20°C 2–8°C
Shelf Life 24+ months 24+ months 24+ months

5. Cosmetic & Topical Peptides

Property GHK-Cu Matrixyl Argireline Matrixyl 3000 SNAP-8
CAS Number 89030-95-5 214047-00-4 616204-22-9 214047-00-4 + 823202-99-9 868020-15-3
MW (Da) 340.78 (Cu complex) 1064.4 888.1 1064.4 + 888.1 1072.3
Type Tripeptide-Cu Pentapeptide Hexapeptide Blend Octapeptide
pI ~7.1 ~8.5 ~9.2 ~8.5 / ~9.2 ~9.2
logP −2.5 +3.5 −1.8 Variable −1.6
Solubility (Water) > 20 mg/mL < 1 mg/mL > 20 mg/mL Variable > 20 mg/mL
Purity ≥ 98% ≥ 97% ≥ 98% ≥ 97% ≥ 98%
Storage 2–8°C 15–25°C 15–25°C 15–25°C 15–25°C
Typical Concentration 0.5–5% 2–4% 5–10% 3–5% 5–10%
pH Range 5.5–6.5 5.5–7.0 5.0–6.5 5.5–7.0 5.0–6.5

6. Tissue Repair & Regenerative Peptides

Property BPC-157 TB-500 (Thymosin Beta-4)
CAS Number 137525-51-0 77591-33-4
Molecular Formula C₆₂H₉₈N₁₆O₂₂ C₁₉₈H₃₀₆N₅₆O₆₅S₂
Molecular Weight (Da) 1419.6 4963.5
Sequence Length 15 aa 43 aa (synthetic)
pI ~6.6 ~5.1
logP −1.3 −2.8
Water Solubility > 20 mg/mL > 15 mg/mL
Purity (HPLC) ≥ 98% ≥ 98%
Storage (Lyophilized) −20°C −20°C
Shelf Life (Lyophilized) 24+ months 24+ months
Storage (Reconstituted) 2–8°C / 7 days 2–8°C / 7 days
Half-life ~4 hours ~3–5 hours
Light Sensitivity High Moderate

7. Mitochondrial & Metabolic Peptides

Property MOTS-c SS-31 (Elamipretide) Humanin AOD-9604
CAS Number 1627586-91-5 736992-11-5 330936-69-1 221231-10-3
Molecular Formula C₁₀₀H₁₆₀N₂₆O₂₇ C₂₈H₄₇N₇O₇ C₁₁₉H₂₀₀N₃₄O₃₂S C₇₈H₁₂₂N₂₀O₂₄S
MW (Da) 2174.5 639.8 2687.1 1815.1
Sequence Length 16 aa 4 aa 24 aa 15 aa (HGH 177–191)
pI ~9.8 ~9.5 ~9.6 ~5.8
logP −2.3 −1.5 −2.6 −1.9
Water Solubility > 20 mg/mL > 30 mg/mL > 15 mg/mL > 20 mg/mL
Purity (HPLC) ≥ 98% ≥ 98% ≥ 98% ≥ 98%
Storage (Lyophilized) −20°C −20°C −20°C 2–8°C
Shelf Life 24+ months 24+ months 24+ months 24+ months
Storage (Reconstituted) 2–8°C / 7 days 2–8°C / 7 days 2–8°C / 7 days 2–8°C / 14 days
Half-life ~1–2 hours ~2 hours ~1 hour ~2 hours

📊 Master Table: All Peptides (Sorted by MW)

Rank Peptide MW (Da) Category CAS Number Sequence Length pI logP
1 Noopept 342.4 Neuro 157115-85-0 Dipeptide analogue N/A +0.8
2 GHK-Cu (with Cu) 340.8 Cosmetic 89030-95-5 3 aa ~7.1 −2.5
3 Epitalon 375.4 Sleep 307997-66-2 4 aa ~4.1 −3.5
4 Pinealon 431.4 Sleep 292422-98-9 3 aa ~6.5 −3.8
5 MK-677 528.7 Growth 159634-47-0 Non-peptide N/A +3.2
6 SS-31 639.8 Mito 736992-11-5 4 aa ~9.5 −1.5
7 Semax 706.8 Neuro 80714-61-0 7 aa ~5.8 −3.2
8 Ipamorelin 711.9 Growth 170851-70-4 5 aa ~9.5 −2.1
9 Selank 756.9 Neuro 129954-34-3 7 aa ~9.8 −3.0
10 GHRP-2 786.9 Growth 157026-82-1 6 aa ~9.8 −2.0
11 GHRP-6 873.0 Growth 142640-99-9 6 aa ~10.2 −1.8
12 Argireline 888.1 Cosmetic 616204-22-9 6 aa ~9.2 −1.8
13 Matrixyl (Pal-KTTKS) 1064.4 Cosmetic 214047-00-4 5 aa ~8.5 +3.5
14 SNAP-8 1072.3 Cosmetic 868020-15-3 8 aa ~9.2 −1.6
15 BPC-157 1419.6 Tissue Repair 137525-51-0 15 aa ~6.6 −1.3
16 AOD-9604 1815.1 Mito 221231-10-3 15 aa ~5.8 −1.9
17 MOTS-c 2174.5 Mito 1627586-91-5 16 aa ~9.8 −2.3
18 Humanin 2687.1 Mito 330936-69-1 24 aa ~9.6 −2.6
19 CJC-1295 3315.7 Growth 863288-34-8 30 aa ~9.2 −1.5
20 Sermorelin 3357.9 Growth 86168-78-7 29 aa ~9.0 −2.5
21 Semaglutide 4113.6 GLP-1 910463-68-2 31 aa ~4.5 −1.2
22 Tirzepatide 4813.5 GLP-1 2023788-19-2 39 aa ~6.2 −1.8
23 Retatrutide 4872.5 GLP-1 2381088-14-0 39 aa ~6.0 −1.6
24 TB-500 4963.5 Tissue Repair 77591-33-4 43 aa ~5.1 −2.8

📊 Summary Statistics

Metric Value
Total Peptides Cataloged 24
MW Range 340.8 Da (GHK-Cu) – 4963.5 Da (TB-500)
Average MW ~1,869 Da
Median MW ~1,084 Da
Shortest Sequence 3 aa (Pinealon, GHK)
Longest Sequence 43 aa (TB-500)
Smallest logP −3.8 (Pinealon, most hydrophilic)
Largest logP +3.5 (Matrixyl, most lipophilic)
Most Acidic pI ~4.1 (Epitalon)
Most Basic pI ~10.2 (GHRP-6)
Longest Half-life ~6–8 days (CJC-1295)
Shortest Half-life ~12 min (Sermorelin)

Compare peptide specifications at AMP Peptide