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HSN code 29242990 refers to “Other cyclic amides and their derivatives and salts”. Cyclic amides are organic compounds containing an amide group (-CONH-) in a cyclic structure. This HSN code includes a variety of cyclic amides such as pyrrolidinones, imidazolones, oxazolidinones, and piperidinones, and their derivatives.

These compounds are used in a range of industries such as pharmaceuticals, agrochemicals, and polymers. For example, pyrrolidinones are used as solvents and as building blocks in the synthesis of pharmaceuticals and agrochemicals. Imidazolones are used in the synthesis of herbicides, while oxazolidinones are used as antibacterial agents.

The salts of cyclic amides have a range of uses such as in the production of pigments, as intermediates in the synthesis of organic compounds, and as catalysts in organic reactions. It iis important to handle these compounds with care as some of them can be toxic, irritants, or flammable. Proper safety measures should be taken when handling these compounds in industrial setting.

The HSN code 29242990 covers all other cyclic amides and their derivatives and salts that are not classified elsewhere. These compounds can be prepared by various synthetic methods, including cyclization of acyl derivatives or amine derivatives. Some examples of cyclic amides covered under this HSN code are lactams, such as pyrrolidinones, piperidinones, and caprolactams. These compounds find applications as solvents, polymer additives, and as intermediates in the synthesis of pharmaceuticals. One of the common derivatives of cyclic amides is N-substituted cyclic amides. These compounds have a substituent group attached to the nitrogen atom in the cyclic amide ring. They exhibit diverse biological  activities, including antibacterial, antifungal, and antitumor properties. They also find applications as intermediates in the synthesis of pharmaceuticals and agrochemicals. 

Cyclic imides are another class of cyclic amides covered under this HSN code. They are produced by the reaction of an anhydride with an amine. These compounds are widely used as intermediates in the synthesis of various pharmaceuticals and agrochemicals. 

Cyclic ureas and thioureas are also included under this HSN code. They are prepared by the cyclization of carbamates and thiocarbamates, respectively. These compounds find applications in the production of agrochemicals and as intermediates in the synthesis of pharmaceuticals. 


the HSN code 29242990 covers all other  cyclic amides and their derivatives and salts that are not classified elsewhere. These compounds find applications in various fields, including pharmaceuticals, agrochemicals, and materials science. The synthesis of these compounds is carried out using different methods, including cyclization of acyl or amine derivatives. N-substituted cyclic amides, cyclic imides, and cyclic ureas and thioureas are some of the derivatives of cyclic amides that find diverse applications in different fields.




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