Question

Analgin is a derivative of
A) phenol
B) benzoic acid
C) Pyrazole
D) Pyridine

Answer 1

Hint:Analgin is a drug which is not potent and does not cause addiction. It is quite effective and gives immediate relief from pain and fever.It has antipyretic properties. It is a non narcotic drug.

Complete solution:
Chemical formula of Analgin is as follows
\[sodium[(2,3-dihydro-1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazol-4 -yl)methylamino] \\methane\, sulfonate \\ \]
It is a derivative of pyrazole.

Pyrazole is an organic compound with the formula \[{C_3}{H_3}{N_2}H\] . It is a heterocycle characterized by a 5-membered ring of three carbon atoms and two adjacent nitrogen atoms. Pyrazole is a weak base.

Aspirin, novalgin, phenacetin and combiflam act as analgesic and antipyretic. They are quite effective and give immediate relief from pain and fever.
An analgesic drug relieves pain without the loss of consciousness by virtue of their action on the central nervous system. Among the different classes of analgesics, pyrazole derivative analgesics are most common.

Therefore, the correct option is C) Pyrazole

Note:
Pyrazoles are simple doubly unsaturated five membered heterocyclic compounds containing 2 nitrogen and 3 carbon atoms, in the ring. Antipyrine (phenazone), amidopyrine (aminophenazone), analgin (novamin-sulphon) and melubrina are the important pyrazole derivative analgesics. Pyrazoles are stable to acids and inactive towards oxidation'., All the pyrazole derivatives can be readily oxidized.