HGH Fragment 176-191 - Front - MiPeptidos
Growth Hormone / GH Secretagogues

HGH Fragment 176-191

CAS: 66004-57-7

HGH Fragment 176-191 is a research peptide in the growth hormone / gh secretagogues category. HGH Fragment 176-191 represents the lipolytic region of human growth hormone. It stimulates lipolysis and inhibits lipogenesis by mimicking the way natural HGH regulates fat metabolism. MiPeptidos offers HGH Fragment 176-191 in 6 sizes with 99.6% verified purity and full analytical documentation.

Starting at
$7.95/vial
In Stock
Ships same day
Request Quote
≥99% Purity
COA Included
Third-Party Tested
Same-Day Shipping
CoA Included
HPLC Verified
GMP Compliant
Third-Party Tested
Same-Day Shipping
Batch Tracked

How HGH Fragment 176-191 Works

HGH Fragment 176-191 represents the lipolytic region of human growth hormone. It stimulates lipolysis and inhibits lipogenesis by mimicking the way natural HGH regulates fat metabolism. Unlike full-length HGH, this fragment does not compete for the GH receptor, does not stimulate IGF-1 production, and does not affect glucose metabolism or insulin sensitivity. Its mechanism of fat mobilization is thought to involve activation of beta-3 adrenergic receptors in adipose tissue.

Research Applications

1
Targeted fat loss without growth effects
2
Lipolysis and lipogenesis research
3
Body composition optimization
4
Metabolic effects of GH fragments
5
Obesity research without diabetogenic effects
View Published Research on PubMed →

Pricing

SizePer Vial10-Pack
1mg
$7.95$57.95
2mg
$11.95$86.95
5mg
$24.95$181.95
10mg
$45.95$334.95
12mg
$51.95$378.95
15mgBest Value
$64.95$473.95

Prices shown per vial from 10-pack. Volume discounts available for 50+ vials — contact us.

HPLC Purity Analysis

High-Performance Liquid Chromatography
99.6%purity
mAURetention Time (min)0250500750100005101520253099.6%
Method: RP-HPLC C18 ColumnDetection: UV 220nmMobile Phase: Acetonitrile/Water + 0.1% TFA

Certificate of Analysis

MiPeptidos
HGH Fragment 176-191
PASSES ALL SPECIFICATIONS
Batch NumberHR-HGHF-2600315
Date of AnalysisJanuary 18, 2026
Purity (HPLC)99.6%
AppearanceWhite to off-white lyophilized powder
SolubilityFreely soluble in sterile water and bacteriostatic water
Molecular Weight (MS)1799.10 Da — Confirmed
Endotoxin (LAL)<0.1 EU/mg
Sterility (USP <71>)Passes USP <71>

This COA is a representative sample. A batch-specific Certificate of Analysis with full HPLC chromatograms and mass spectrometry data is included with every MiPeptidos order.

Reconstitution Calculator

Add this much bacteriostatic water:
1.0 mL
1 mg HGH Fragment 176-191 + 1.0 mL BAC water = 1 mg/mL

Inject bacteriostatic water slowly along the vial wall. Gently swirl until dissolved — never shake. Store reconstituted solution at 2-8°C and use within 30 days.

Download Product Brochure

Get our detailed HGH Fragment 176-191 product brochure with specifications, research applications, HPLC analysis data, and reconstitution guide. Available in English and Spanish.

Customer Reviews

5.0/5from 1 review
Verified
Dr. Min-Jun Park·Seoul, South Korea

HGH Fragment 176-191 is a critical control in our lipolysis studies. MiPeptidos' fragment maintains the expected fat-metabolism activity without the growth-promoting IGF-1 elevation. Our mass spec confirmed the correct 1...

Jan 18, 2026
View All Reviews →

Frequently Asked Questions

HGH Fragment 176-191 (CAS: 66004-57-7) is a research compound, with a molecular weight of 1799.10 Da in the Growth Hormone / GH Secretagogues category. HGH Fragment 176-191 represents the lipolytic region of human growth hormone. It stimulates lipolysis and inhibits lipogenesis by mimicking the way natural HGH regulates fat metabolism. Researchers commonly investigate HGH Fragment 176-191 for Targeted fat loss without growth effects, Lipolysis and lipogenesis research, Body composition optimization. Every vial from MiPeptidos includes batch-specific analytical documentation.
HGH Fragment 176-191 is available in 6 sizes (1mg, 2mg, 5mg, 10mg, 12mg, 15mg), so reconstitution volume depends on which vial you have. For the 1mg size, add 1mL of bacteriostatic water; for the 15mg size, use 2-3mL. Always let the vial warm to room temperature first, inject the water slowly along the vial wall, and swirl gently — never shake. Store reconstituted HGH Fragment 176-191 at 2-8°C and use within 30 days. MiPeptidos carries bacteriostatic water in 3mL and 10mL vials.
HGH Fragment 176-191 and AOD9604 share nearly identical 16-amino acid sequences (HGH residues 176-191), but AOD9604 has a tyrosine N-terminal substitution that increases lipolytic potency. Both promote fat breakdown without raising IGF-1 or blood glucose. Fragment 176-191 retains the native phenylalanine, making it closer to the endogenous sequence. At 1799 Da, it is slightly lighter than AOD9604 (1815 Da). MiPeptidos carries both for researchers comparing native vs modified GH fragment activity.
Store lyophilized HGH Fragment 176-191 at -20°C for maximum long-term stability — properly stored, it remains potent for 24+ months. Once reconstituted with bacteriostatic water, keep it refrigerated at 2-8°C and use within 30 days. In research applications, HGH Fragment 176-191 has a reported half-life of ~30 minutes, which informs dosing frequency and protocol design. Avoid repeated freeze-thaw cycles and protect from direct light. MiPeptidos ships every order with cold-chain packaging to maintain integrity during transit.
Every HGH Fragment 176-191 order from MiPeptidos includes a batch-specific Certificate of Analysis. Our current batch (HR-HGHF-2600315, tested January 18, 2026) shows 99.6% purity by HPLC, mass spectrometry confirmation at 1799.10 Da, endotoxin levels below 0.1 EU/mg, and passing sterility per USP <71>. This level of documentation ensures you can verify compound identity and purity before beginning your research. MiPeptidos also offers bulk pricing on orders of 50+ vials — contact info@mipeptidos.com.

Specifications

Purity
≥99%
Form
Lyophilized Powder
CAS Number
66004-57-7
Mol. Weight
1799.10 Da
Formula
C78H123N23O22S2
Half-Life
~30 minutes
Storage
Store at -20°C. Reconstituted: 2–8°C for up to 30 days.
Sizes
1mg, 2mg, 5mg, 10mg, 12mg, 15mg

Sequence

YLRIVQCRSVEGSCGF (16 amino acids; C-terminal fragment of HGH)

Research Use Only. This product is intended for laboratory research purposes only. Not for human consumption. Handle with appropriate safety precautions.

Request QuoteBulk Pricing Inquiry

Related Peptides

HGH - MiPeptidos
Ships Today
Growth Hormone / GH Secretagogues

HGH

Recombinant human growth hormone (somatropin) produced via recombinant DNA technology. The reference standard for growth hormone research and bioassay development.

From$16.95/vial
6 sizesIn Stock
≥99%
CJC1295 with DAC - MiPeptidos
Ships Today
Growth Hormone / GH Secretagogues

CJC1295 with DAC

A growth hormone-releasing hormone (GHRH) analog with a drug affinity complex (DAC) for extended half-life. Researched for sustained GH elevation and pulsatile release patterns.

From$24.95/vial
2 sizesIn Stock
≥99%
CJC 1295 (without DAC) - MiPeptidos
Ships Today
Growth Hormone / GH Secretagogues

CJC 1295 (without DAC)

Also known as Mod GRF 1-29, a modified GHRH analog without the drug affinity complex. Produces shorter, more physiological GH pulses compared to the DAC variant.

From$10.95/vial
3 sizesIn Stock
≥99%
CJC 1295 5mg + IPA 5mg - MiPeptidos
Ships Today
Growth Hormone / GH Secretagogues

CJC 1295 5mg + IPA 5mg

A combination blend of CJC 1295 (without DAC) and Ipamorelin. Studied for synergistic GHRH/GHRP pathway activation and optimized GH release patterns.

From$39.95/vial
In Stock
≥99%