What is HCG?
HCG (Human Chorionic Gonadotropin — LH receptor agonist) is a Glycoprotein hormone (alpha: 92aa + beta: 145aa + C-terminal extension). Glycoprotein hormone activating LH receptor (LHCGR) — structurally identical alpha subunit to LH, with unique beta-subunit C-terminal extension extending half-life (36hr vs 2hr for LH). Stimulates Leydig cell testosterone, Sertoli cell function, spermatogenesis maintenance, and corpus luteum progesterone.
Research Applications
LHCGR Pharmacology
LH receptor kinetics, cAMP cascade, steroidogenic enzyme upregulation
Leydig Cell Research
Testicular testosterone production, StAR protein, CYP17A1
Spermatogenesis
Sertoli cell support, BTB maintenance, sperm maturation
Female Reproductive
Corpus luteum progesterone, ovulation trigger, follicle research
vs LH/FSH
Gonadotropin comparison — receptor sharing, duration, downstream effects
Quick Specs
| Form |
Glycoprotein hormone (~36–40 kDa; alpha and beta s |
| Purity |
≥99% by HPLC — every batch |
| CAS Number |
9002-61-3 |
| Molecular Weight |
MS molecular weight confirmed — every batch |
| Specification |
≥99% by HPLC — every batch |
| Shelf Life |
24 months unopened |
| Storage |
-20°C sealed | 2–8°C reconstituted (2–4 weeks) |
| Manufacture |
In-house Fmoc SPPS — Qingdao, China |
| Brand |
Peptides |
Certificate of Analysis (COA)
Frequently Asked Questions
How do I reconstitute this peptide?
Add 1–2mL bacteriostatic water to the lyophilized HCG vial, directing water down the inner wall. Swirl very gently — HCG is a large glycoprotein (36,000 Da) and can denature if handled roughly. Do not shake. Solution should be clear.
How should this peptide be stored?
Store lyophilized at 2–8°C (refrigerator) or −20°C (freezer). Reconstituted HCG should be refrigerated at 2–8°C and used within 30 days. Unlike peptides, HCG is sensitive to freezing once reconstituted — do not freeze reconstituted solution.
What purity is this QSC compound and how is it verified?
QSC HCG (Human Chorionic Gonadotropin) is ≥99% pure by HPLC with MS-confirmed molecular identity on every batch. COA is published on the product page and independently verifiable at verify.janoshik.com.
🧪 Peptide Research Tools: Use QSC's free
peptide calculators — reconstitution, BAC water, dosing, half-life, and mixing charts.
🌍 Domestic shipping: 🇺🇸 USA 5–7 days
🌏 International shipping: 7–14 days
⚠️ RESEARCH USE ONLY — NOT FOR HUMAN CONSUMPTION
QSC products are strictly for in vitro and in vivo laboratory research.
Safety & Handling
🚫
Not for Human Use
These compounds are for research only.
🥽
PPE Required
Always use appropriate protective equipment.
❄️
Storage Compliance
Follow product-specific storage conditions.
Product-Specific Storage
-20°C sealed | 2–8°C reconstituted (2–4 weeks)
