Chloramphenicol is a semisynthetic, broad-spectrum antibiotic derived from Streptomyces venequelae with primarily bacteriostatic activity. Chloramphenicol diffuses through the bacterial cell wall and reversibly binds to the bacterial 50S ribosomal subunit. The binding interferes with peptidyl transferase activity, thereby prevents transfer of amino acids to the growing peptide chains and blocks peptide bond formation. As a […]

Avidin is a tetrameric biotin-binding protein produced in the oviducts of birds, reptiles and amphibians deposited in the whites of their eggs. In chicken egg white, avidin makes up approximately 0.05% of total protein (approximately 1.8 mg per egg). The tetrameric protein contains four identical subunits (homotetramer), each of which can bind to biotin (Vitamin […]

Until recently, Vancomycin was one of the most powerful antibiotics that no bacterial cell had resistance to. Vancomycin is a very successful glycopeptide antibiotic, attacking the D alanyl D alanine component of the cell wall. By binding to the D alanyl D alanine component, Vancomycin is able to interrupt the normal cell wall formation. However, […]

Methyltestosterone is a 17-alpha-alkylated anabolic steroid used to treat men with a testosterone deficiency. It is also used in women to treat breast cancer, breast pain, swelling due to pregnancy, and with the addition of estrogen it can treat symptoms of menopause. It bears close structural similarity to testosterone, but has a methyl group at […]

Methylprednisolone is a synthetic glucocorticoid or corticosteroid drug. It is marketed in the USA and Canada under the brand names Medrol and Solu-Medrol. It is also available as a generic drug.

Methyldihydrotestosterone is an androgenic anabolic steroid.

Synthetic phenyl Acetic acid is a white crystalline compound with a honey like odour in low concentrations, used in some perfumes and in penicillin G production. In its pure form it is harmful by ingestion, inhalation or through skin contact and is a severe eye, skin and respiratory irritant. It may act as a teratogen. […]

Melatonin, the principal hormone of the pineal gland, is also produced by the retina, lens and GI tract. It is naturally synthesized from the amino acid tryptophan (via synthesis of serotonin) by the enzyme 5-hydroxyindole-O-methyltransferase. Production of melatonin by the pineal gland is under the influence of the suprachiasmatic nucleus of the hypothalamus (SCN -the […]

Methylboldenone/Methyltestosterone is a 17-alpha-alkylated anabolic steroid used to treat men with a testosterone deficiency. It is also used in women to treat breast cancer, breast pain, swelling due to pregnancy, and with the addition of estrogen it can treat symptoms of menopause. It has a close structural similarity to testosterone, but has a methyl group […]

Methaqualone (brand name Quaalude /?kwe?lu?d/) in the USA and Mandrax in the UK is a sedative-hypnotic drug of the quinazolinone class that acts as a general central nervous system depressant. The sedative–hypnotic activity of methaqualone was first noted by Indian researchers in the 1950s and in 1962 methaqualone itself was patented in the US by […]