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Product Catalog 

 

LR3 IGF-1

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Product Description

Item

Specifications

Appearance 

White lyophilized powder

Purification method

The liquid phase layer analysis

Identification

The sample retention time conformed to that of standard sample

Purity

98% min

Water

3.0%

The colony counting

Undetectable

Sterility

BP

Bacterial endotoxins

 5.0IU/ mg

 

Lr3IGF-1 (Long R3 Insulin-like Growth Factor-I or Long R3IGF-I) is an 83 amino acid analog of human IGF-I actually comprising the complete human IGF-1 sequence but with the substitution of an Arg for the Glu at position 3, as well as a 13 amino acid extension peptide at the N-terminus. This makes Long R3IGF-I significantly more potent (2-3x) than IGF-I in studies, because it has a lower affinity to be rendered inactive by IGF binding proteins, and consequently more potential activity in the body.

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