consisting of mixed or unmixed products for therapeutic or prophylactic uses, put up in measured doses or in forms or packings for retail sale: containing penicillins or derivatives thereof, with a penicillanic acid structure, or streptomycins or their derivatives: other: other: other. (faqs.org)
Medicaments containing alkaloids or derivatives thereof, not containing hormones, steroids used as hormones or antibiotics, not in measured doses or put up for retail sale (excl. (tariffnumber.com)
Molecular structure1
The molecular structure of β-lactam antibiotics can be modified either to introduce another β-lactam ring (the pharmacophore conferring bactericidal activities to these molecules), or to add other pharmacophores that modify their pharmacological properties and spectrum of action. (encyclopedia.pub)
CELL WALLS2
They can also be classified by whether or not they stain (based on the structure of their CELL WALLS) with CRYSTAL VIOLET dye: gram-negative or gram-positive. (lookformedical.com)
They occur naturally as N-acetyl derivatives in peptidoglycan, the characteristic polysaccharide composing bacterial cell walls. (lookformedical.com)
Active1
For example, to date, hundreds of cephalosporin derivatives are available and they are classified into five "generations" that are characterized by different ways of administration and by an enhanced microbicidal activity towards Gram-negative bacteria (while the founder molecule is mainly active on Gram-positive bacteria) [ 12 ] . (encyclopedia.pub)
Action1
Additionally, several derivatives of the natural compounds have been created to modulate their pharmacokinetic properties and/or to widen their spectrum of action. (encyclopedia.pub)
A penicillanic acid and sulfone derivative and potent BETA-LACTAMASE inhibitor that enhances the activity of other anti-bacterial agents against beta-lactamase producing bacteria. (nih.gov)
PENICILLINS2
Containing penicillins or derivatives thereof, Free and other requirements as administered by Drug Controller General of India under the provisions of Drugs and Cosmetics Act. (onlinepdfcatalog.com)
The structure of both the nucleus and side chain of the penicillins and cephalosporins determined the rate of their hydrolysis by the β-lactamase. (microbiologyresearch.org)
Tazobactam1
We conducted a prospective, randomized, double-blind trial comparing ertapenem (1 g once daily) with piperacillin-tazobactam (3.375 g every 6 h) as parenteral treatment for 540 adults with complicated skin and skin-structure infections. (nih.gov)
20191
HN - 2019 MH - Afatinib UI - D000077716 MN - D2.65.132 MN - D3.633.100.786.188 MS - A quinazoline and butenamide derivative that acts as a tyrosine kinase inhibitor of epidermal growth factor receptors (ERBB RECEPTORS) and is used in the treatment of metastatic NON-SMALL CELL LUNG CANCER. (nih.gov)