Lean Mass – Start

Lean Mass (Start) is supplied as a multi-component laboratory research reference set for in-vitro and laboratory research use only. The set is assembled around three individually documented synthetic peptide reference materials - IGF-1 LR3, PEG-MGF, and a co-packaged BPC-157 + TB-500 pairing - each intended for analytical characterization, method development, and comparative in-vitro bench work.

IGF-1 LR3 is a 83-residue Long R3 analog of insulin-like growth factor 1, in which the native N-terminus is extended by a 13-residue sequence and the position 3 glutamate is substituted with arginine. This modification profile alters the isoelectric point and binding-protein affinity relative to native IGF-1, and produces a characteristic monoisotopic mass near 9.1 kDa that is readily confirmed by ESI-MS and reversed-phase HPLC retention profiling.

PEG-MGF is a synthetic Mechano Growth Factor peptide (a C-terminal splice variant of the IGF-1 gene product) conjugated to a polyethylene glycol moiety on the N-terminus. The PEGylation shifts the apparent molecular weight and hydrodynamic radius versus unmodified MGF, which is observable as a broadened, higher-retention peak on SEC and RP-HPLC and as a mass distribution centered on the PEG polydispersity in MALDI-TOF analysis.

The BPC-157 + TB-500 component consists of two distinct synthetic peptides supplied together as reference material for comparative work. BPC-157 is a 15-amino-acid pentadecapeptide (Gly-Glu-Pro-Pro-Pro-Gly-Lys-Pro-Ala-Asp-Asp-Ala-Gly-Leu-Val) derived from a partial sequence of a gastric protein, with a theoretical monoisotopic mass near 1.4 kDa. TB-500 corresponds to the synthetic Thymosin beta-4 fragment sequence (Ac-LKKTETQ), an N-acetylated 7-residue peptide with a mass near 0.9 kDa. The two peptides differ substantially in length, charge state, and RP-HPLC retention, allowing them to be resolved and identified as separate analytes.

All Lean Mass (Start) components are provided as lyophilized (freeze-dried) powders in individual sealed vials, with each vial traceable to a lot-specific Certificate of Analysis documenting identity by mass spectrometry and purity of not less than 98% by HPLC. The lyophilized format is intended to support standard reconstitution workflows in analytical laboratory settings and to preserve peptide integrity during controlled cold storage.

PEPTIDE.Power makes no therapeutic, diagnostic, or efficacy claims regarding the Lean Mass (Start) set or any of its individual components, and provides no administration, combination, sequencing, or dosing guidance. These materials are not drugs, supplements, cosmetics, or food, and are not for human or veterinary use, injection, or ingestion. Identity, purity, sequence confirmation, and lot data for each of the three components are documented exclusively on the corresponding lot-specific Certificate of Analysis, available on request.

Supplied as a set of individually sealed vials of lyophilized (freeze-dried) powder, one per component. A research reference set - not a finished product and not a delivery device. Net contents per component are shown in the product options.

Store each sealed lyophilized component at -20 C, protected from light and moisture. After reconstitution for laboratory use, keep cold and use promptly. Handle per standard laboratory practice; Safety Data Sheets (SDS) are available on request.

This set is sold to qualified laboratory and research buyers for lawful research use only. The components are not drugs, supplements, cosmetics, or food, and are not for human or veterinary use, injection, or ingestion. By purchasing, you confirm you are 21 or older and will use these materials only for lawful laboratory research.