Certificate of Analysis and Data Sheet

Source:

Catalog No.
HOR-244

Description :

Histrelin is a hormone similar to one normally released from the hypothalamus gland in the brain. Histrelin works by decreasing the amount of estrogen and testosterone in the blood. Suppressing estrogen can cause thinning of the bones or slowing of their growth. Histrelin acetate is a potent LHRH agonist which stimulates LH and FSH release and inhibits the actions of sex steroids on the male and female reproductive tracts. After a transient increase, continuous administration results in down regulation of LH and FSH levels followed by a suppression of ovarian and testicular steroid biosynthesis. Histrelin potency in vivo and in vitro is similar to that of the D-Trp⁶-containing analog. Especially because of its high water solubility and greater lipophilic character, it appears promising for clinical application. Histrelin has a molecular formula of C₆₆H₈₆N₁₈O₁₂ a.a. sequence of Pyr-His-Trp-Ser-Tyr-D-His(Bzl)-Leu-Arg-Pro-NHEt and having a Mw of 1323.32.

Physical Appearance:

Sterile Filtered White lyophilized (freeze-dried) powder.

Formulation:

The protein (1mg/ml) was lyophilized with no additives.

Solubility:

It is recommended to reconstitute the lyophilized Histrelin in sterile 18MΩ-cm H₂O not less than 100ug/ml, which can then be further diluted to other aqueous solutions.

Stability:

Lyophilized Histrelinalthough stable at room temperature for 3 weeks, should be stored desiccated below -18⁰C. Upon reconstitution Histrelin should be stored at 4⁰C between 2-7 days and for future use below -18⁰C. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).
Please avoid freeze-thaw cycles.

Purity:

Greater than 99.0% as determined by: (a) Analysis by RP-HPLC. (b) Anion-exchange FPLC. (c) Analysis by reducing and non-reducing SDS-PAGE Silver Stained.

Dimers and aggregates:

Less than 1% as determined by silver-stained SDS-PAGE gel analysis.

Endotoxin:

Less than 0.1 ng/ug (IEU/ug) of Histrelin.

Protein content:

Protein quantitation was carried out by two independent methods: 1. UV spectroscopy at 280 nm. 2. Analysis by RP-HPLC, using a calibrated solution of Histrelin as a Reference Standard.

Usage:

Prospec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

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