Bupivacaine Hydrochloride is 2-Piperidinecarboxamide, 1-butyl-N-(2,6-dimethylphenyl)-, monohydrochloride, monohydrate, a white crystalline powder that is freely soluble in 95 percent ethanol, soluble in water, and slightly soluble in chloroform or acetone. It has the following structural formula :

Ropivacaine Hydrochloride is the hydrochloride salt of ropivacaine, a local anesthetic of the amide type with analgesic activity. Ropivacaine binds to voltage-gated sodium ion channels in the neuronal membrane, thereby preventing the permeability of sodium ions and resulting in a stabilization of the neuronal membrane and inhibition of depolarization; nerve impulse generation and propagation are blocked, resulting in a reversible loss of sensation.

Octreotide, sold under the brand name Sandostatin among others, is an octapeptide that mimics natural somatostatin pharmacologically, though it is a more potent inhibitor of growth hormone, glucagon, and insulin than the natural hormone.

L-arginine is an amino acid that helps the body build protein.

Your body usually makes all the L-arginine it needs. L-arginine is also found in most protein-rich foods, including fish, red meat, poultry, soy, whole grains, beans and dairy products.

As a supplement, L-arginine can be used orally and topically.

Because L-arginine acts as a vasodilator, opening (dilating) blood vessels, many people take oral L-arginine to try to treat cardiovascular conditions and erectile dysfunction.

Product Name: L-Arginine Monohydrochloride

Compendia: USP/EP/JP

CAS # 1119-34-2

Formula: C6H14N4O2•HCl

Molecular Weight: 210.66

Description: White crystals or crystalline powder; slightly characteristic taste.

Solubility: Freely soluble in water and in formic acid, very soluble in ethanol (95).

Identification: Compare the infrared absorption spectrum of the sample with that of the standard by potassium bromide disc method.