FOR LABORATORY RESEARCH USE ONLY — not for human or veterinary use, diagnosis, treatment, or cosmetic application. Buyers must be 21+ and legally permitted to purchase research chemicals in their jurisdiction.Intended-use statement →
HGH Wholesale
Human Growth Hormone (somatropin) — 191-amino acid central regulator of the GH/IGF-1 axis, batch-documented, manufacturer-direct
Product Identity
| CAS Number | 12629-01-5 |
| Sequence | 191-amino acid polypeptide with 2 disulfide bonds (Cys⁵³-Cys¹⁶⁵, Cys¹⁸²-Cys¹⁸⁹) |
| Molecular Formula | C₉₉₀H₁₅₂₈N₂₆₂O₃₀₀S₇ |
| Molecular Weight | ~22,125 Da |
| Isoelectric Point | ~5.2 |
| Appearance | White to off-white lyophilized powder |
| Purity | ≥99% by HPLC |
| Solubility | Sterile water or bacteriostatic water; gentle swirling |
| Storage | 2–8°C (lyophilized); use promptly after reconstitution |
Available Configurations
| Configuration | Content | Best For |
|---|---|---|
| 100 IU Kit | 10 IU (~3.3mg) × 10 vials | Evaluation; small-scale research |
| 150 IU Kit | 15 IU (~5mg) × 10 vials | Medium-scale protocols |
| 200 IU Kit | 20 IU (~6.7mg) × 10 vials | High-throughput; bulk research |
| Custom | Custom IU × custom vials | OEM; specific protocols |
Research Background
Human Growth Hormone is a 191-amino acid, single-chain polypeptide synthesized by somatotroph cells in the anterior pituitary. It is the primary regulator of postnatal somatic growth and a key metabolic hormone — controlling the GH/IGF-1 axis via hypothalamic GHRH (+) and somatostatin (-) regulation.
Proposed Mechanisms
Research Focus Areas
GH effects on lean mass, fat mass, bone density
Anabolic signaling; fractional synthetic rate
Age-related GH decline (somatopause); IGF-1 models
Lipolytic effects; insulin sensitivity modulation
GH effects on tissue repair; collagen synthesis
Quality Specifications
| Parameter | Method | Criterion |
|---|---|---|
| Purity (HPLC) | RP-HPLC, C18 | ≥99.0% peak area |
| Identity (MW) | ESI-MS / MALDI-TOF | ~22,125 ± 5.0 Da |
| Appearance | Visual | White to off-white powder |
| Protein Content | UV A₂₈₀ / Bradford | ≥90% of labeled content |
| Purity (SDS-PAGE) | Reducing SDS-PAGE | Single band at ~22 kDa (bulk orders) |
| Residual Moisture | Karl Fischer | ≤3% |
| Endotoxin | LAL assay | ≤1.0 EU/mg (on request) |
Tiered Wholesale Pricing
Kit prices are quoted per specification — current list prices for peptide kits run from US$24 to US$339 per kit (10 vials); tiered volume discounts apply (see the tier table) — source:wholesale price list (PDF, updated 2026-08-08).
| Volume | Discount | For |
|---|---|---|
| 1 kit | List price | Evaluation; competitive analysis |
| 5+ kits | 10% off | Initial portfolio expansion |
| 20+ kits | 20% off | Mid-size distributors |
| 50+ kits | 30% off | Regional distributors |
FAQ
What's the difference between HGH and GHS peptides (CJC-1295, Ipamorelin)?
HGH directly activates GH receptors on target tissues and stimulates IGF-1. GHS peptides (CJC-1295, Ipamorelin) stimulate pituitary release of endogenous GH. For direct GH receptor studies: use HGH. For GH axis regulation studies: use GHS peptides. In body composition research, HGH gives precise dose control; GHS peptides produce more physiological but less controllable responses.
How should HGH be reconstituted and stored?
Reconstitute with sterile or bacteriostatic water — add diluent gently down vial wall, don't squirt onto powder. Swirl gently (never shake or vortex — denatures protein). Store reconstituted at 2–8°C, use within 7–14 days. Never freeze-thaw — causes aggregation and bioactivity loss.
Which kit size should I order?
Rodent research: 100 IU kit (10 IU vials) for weight-based dosing. Larger animal models or high-concentration cell culture: 150 IU or 200 IU kits. Uncertain? Start with 100 IU evaluation. Contact us — share your model and we'll recommend the right configuration.
How do you verify it's actually intact HGH and not a fragment?
Three methods: (1) Mass spectrometry confirms MW ~22,125 Da ±5 Da — a fragment would show different mass. (2) SDS-PAGE shows single band at ~22 kDa — multiple bands = impurities or degradation. (3) RP-HPLC confirms ≥99% single-peak purity. All three in our QC release testing for research-grade HGH.
All products are manufactured for laboratory research purposes only. HGH is labeled FOR LABORATORY RESEARCH USE ONLY. Not for human or veterinary use, diagnosis, treatment, prophylaxis or any clinical, cosmetic, dietary or household application. Not a dietary supplement, pharmaceutical ingredient, cosmetic ingredient or approved drug substance. Buyers are responsible for verifying the legal status of importation and possession in their destination country. HGH is a controlled or prescription-only substance in many jurisdictions — buyers must hold any licence required to import or possess it.
Ready to Source HGH?
Three kit configurations. Tiered pricing up to 30%. Full analytical QC: MS + SDS-PAGE + HPLC with every bulk order.