SOMA Enclomiphene Powder 1g
Enclomiphene (trans-clomiphene) powder 1g — ≥98% HPLC purity, COA verified. Non-steroidal selective estrogen receptor modulator studied for HPTA axis restoration and testosterone research. For research use only.
Buy Research Peptides USA
Rainbow Peptide supplies 46 HPLC-verified research compounds to US researchers — peptides and SARMs at ≥98% purity with independent third-party CoA. Ships to all 50 states in 2–3 business days.
✓ HPLC ≥98% Purity ✓ Third-Party CoA ✓ Ships All 50 States ✓ 2–5 Day Delivery ✓ Discreet Packaging
Buying Research Peptides in the United States
In the United States, research peptides and SARMs can be legally purchased and possessed for legitimate in vitro laboratory research and preclinical study purposes. They are sold as research chemicals under a "For Research Use Only" (RUO) designation and are not FDA-approved for human therapeutic use or consumption.
The US research chemical market is among the most developed globally — with significant academic and private-sector demand for peptide compounds including BPC-157, GHK-Cu, TB-500, CJC-1295/Ipamorelin, and the SARMs category (RAD-140, LGD-4033, Ostarine, MK-677, Enclomiphene).
Rainbow Peptide supplies US researchers with compounds meeting pharmaceutical-adjacent purity standards: ≥98% HPLC purity, mass spectrometry identity confirmation, and independent third-party Certificate of Analysis on every order.
Research Compounds — US Shipping
All products For Research Use Only. Not for human consumption.
- SOMA
SOMA YK-11 Powder 1g
YK-11 powder 1g — ≥98% HPLC purity, COA verified. Steroidal SARM and partial androgen receptor agonist with myostatin inhibition activity — unique dual mechanism for muscle biology research. For research use only.
SOMA SR-9009 Powder 1g
SR-9009 (Stenabolic) powder 1g — ≥98% HPLC purity, COA verified. Rev-erbα and Rev-erbβ agonist used in circadian biology, metabolic syndrome, and cardiovascular preclinical research. For research use only.
SOMA Andarine S4 Powder 1g
Andarine (S4, GTx-007) powder 1g — ≥98% HPLC purity, COA verified. Selective androgen receptor modulator studied in bone density and muscle tissue models with unique ocular AR research applications. For research use only.
SOMA Cardarine GW501516 Powder 1g
Cardarine (GW501516) powder 1g — ≥98% HPLC purity, COA verified. PPARδ agonist used in fatty acid oxidation, metabolic syndrome, and exercise mimetic research. For research use only.
SOMA Ostarine MK-2866 Powder 1g
Ostarine (MK-2866, Enobosarm) powder 1g — ≥98% HPLC purity, COA verified. The most extensively studied SARM, with completed Phase II clinical trials in muscle wasting and cancer cachexia. For research use only.
SOMA MK-677 Powder 1g
MK-677 (Ibutamoren) powder 1g — ≥98% HPLC purity, COA verified. Orally active ghrelin receptor agonist and GH secretagogue studied in GH deficiency, muscle wasting, and metabolic research. For research use only.
SOMA LGD-4033 Powder 1g
LGD-4033 (Ligandrol) powder 1g — ≥98% HPLC purity, COA verified. High-affinity selective androgen receptor modulator with Phase II clinical data in muscle wasting and bone density. For research use only.
SOMA RAD-140 Powder 1g
RAD-140 (Testolone) powder 1g — ≥98% HPLC purity, COA verified. Potent selective androgen receptor modulator used in muscle wasting and neuroprotection preclinical research. For research use only.
SOMA Histidine Buffered Saline (HBS) 20mL
Histidine Buffered Saline (HBS), 20mL, pH 6.0. Pharmaceutical-grade formulation buffer for biologic reconstitution, protein stability, and subcutaneous delivery research. COA included.
SOMA Phosphate Buffered Saline (PBS) 20mL
Research-grade Phosphate Buffered Saline (PBS), 20mL, pH 7.4. Sterile, endotoxin-free buffer for peptide reconstitution, cell culture maintenance, and laboratory protocols. COA included.
SOMA CJC-1295 + Ipamorelin Blend (10mg + 5mg)
CJC-1295 (No DAC) + Ipamorelin dual GH-axis research blend. 10mg CJC-1295 + 5mg Ipamorelin per vial. Synergistic GHRH/GHS-R1a combination for growth hormone secretagogue research. COA included.
US Shipping Details
Dispatch
Orders placed before 2PM EST ship same day or next business day
Delivery
2–3 business days to all US states (USPS Priority / FedEx Ground)
Packaging
Temperature-controlled, discreet — no external product branding
CoA
Third-party Certificate of Analysis included with every US order
Most Popular US Research Compounds
| Compound | Research Area | US Search Volume | Purity |
|---|---|---|---|
| BPC-157 | Tissue repair, GI, musculoskeletal | 165,000/mo | ≥98% HPLC |
| GHK-Cu | Anti-aging, skin, collagen synthesis | 74,000/mo | ≥98% HPLC |
| RAD-140 | Muscle wasting, neuroprotection (SARM) | 49,500/mo | ≥98% HPLC |
| MK-677 | GH/IGF-1 axis, body composition | 40,500/mo | ≥98% HPLC |
| TB-500 | Musculoskeletal, cardiac tissue | 28,000/mo | ≥98% HPLC |
| Enclomiphene | HPTA axis, testosterone restoration | 27,100/mo | ≥98% HPLC |
| LGD-4033 | Muscle wasting, hip fracture rehab (SARM) | 14,800/mo | ≥98% HPLC |
| PT-141 | Sexual function research | 23,000/mo | ≥98% HPLC |
| CJC-1295 | GH axis, pulse amplification | 18,000/mo | ≥98% HPLC |
Frequently Asked Questions — Peptides USA
Is it legal to buy peptides in the USA?
Research peptides are legal to purchase in the United States when sold explicitly For Research Use Only (RUO) and not marketed for human therapeutic use or consumption. They are not FDA-approved drugs and are sold as research chemicals. Buyers must be 18+ and confirm research-only intent. Rainbow Peptide sells all products with clear RUO labeling. Buyers are responsible for compliance with applicable regulations.
Does Rainbow Peptide ship to all US states?
Yes. Rainbow Peptide ships research peptides and SARMs to all 50 US states. Orders placed before 2PM EST typically ship same-day or next business day. Domestic US shipping arrives in 2–3 business days via temperature-controlled, discreet packaging. Tracking provided on all shipments.
What are the most popular research peptides in the USA?
The highest-demand research peptides in the US market: BPC-157 (165K monthly searches, tissue repair and GI research), GHK-Cu (74K/mo, anti-aging and skin biology — +1,016% YoY search growth), TB-500 / Thymosin Beta-4 (musculoskeletal research), CJC-1295 + Ipamorelin (GH axis), PT-141 (Bremelanotide, 23K/mo), Retatrutide (metabolic research), and Epithalon (telomere biology). Rainbow Peptide stocks all major research compounds.
Can I buy SARMs in the USA for research?
Yes. SARMs (Selective Androgen Receptor Modulators) can be purchased as research chemicals in the United States for legitimate in vitro and preclinical research purposes. Rainbow Peptide offers RAD-140, LGD-4033, Ostarine (MK-2866), MK-677, Andarine (S4), Cardarine (GW501516), SR9009, YK-11, and Enclomiphene — all at >=98% HPLC purity with independent third-party CoA. For Research Use Only.
How fast does US peptide shipping arrive?
Domestic US peptide orders from Rainbow Peptide Overnight and 2–3 day delivery available in temperature-controlled, discreet packaging. Depending on location, delivery takes 2–3 business days. Priority shipping options are available at checkout. All orders include full tracking.
What purity should US research peptides be?
Research-grade peptides for US laboratory use should be >=98% pure as verified by HPLC (High-Performance Liquid Chromatography). A Certificate of Analysis from an independent third-party laboratory — not the manufacturer — should confirm both HPLC purity and mass spectrometry identity. All Rainbow Peptide compounds meet this standard.
46 research compounds. HPLC ≥98% purity. Third-party CoA on every order. Ships to all 50 US states in 2–3 business days.
Shop US Peptide Catalog Shop SARMs Research Use Only: All Rainbow Peptide products are sold For Research Use Only.
Not for human consumption or therapeutic use. Rainbow Peptide is not a licensed pharmacy.
For research chemical use only.