N-Phenylsemicarbazide
N-Phenylsemicarbazide is used for carbonyl derivatization in chromatography. As a ureine derivative, it falls under HTS 2924.21.50.00 'other' category.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If other cyclic carbamate derivatives
Carbamate-like structure alternative classification.
If analytical staining reagent
Retail packed lab reagents classify as pigments.
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Import Tips & Compliance
• TLC purity >98% for derivatization reagent specification
• Solvent-free packaging prevents Chapter 29 note (e) exclusion
• Avoid pharma intermediate declaration triggering FDA
Related Products under HTS 2924.21.50.00
Urea Dinitrate
Urea dinitrate is a derivative of ureines formed by reacting urea with nitric acid, resulting in a salt with carboxyamide-function structure. It falls under HTS 2924.21.50.00 as 'other' ureines and their derivatives; salts thereof within the cyclic amides category of Chapter 29. This compound is used in chemical synthesis and as an intermediate in organic processes.
Semicarbazide Hydrochloride
Semicarbazide hydrochloride is a ureine derivative salt used in pharmaceutical synthesis and as a reagent for carbonyl compound detection. Classified under HTS 2924.21.50.00 as 'other' ureines and derivatives; salts thereof, meeting Chapter 29 requirements for separate chemically defined organic compounds with carboxyamide function.
1,1-Dimethylurea
1,1-Dimethylurea is a symmetric ureine derivative used as a solvent and in polymer synthesis, featuring the characteristic urea moiety. It qualifies for HTS 2924.21.50.00 as 'other' ureines and their derivatives under Chapter 29's organic compound provisions.
Benzylurea
Benzylurea is an N-substituted ureine derivative used in organic synthesis and pharmaceutical intermediates. Falls under HTS 2924.21.50.00 as 'other' ureines and derivatives; salts thereof, as a chemically defined carboxyamide-function compound.
Allythiourea
Allylthiourea serves as a reagent in analytical chemistry and polymer modification, recognized as a ureine derivative with thio-substitution. Classified in HTS 2924.21.50.00 as 'other' ureines and their derivatives within Chapter 29's organic compounds.
Ethylenethiourea
Ethylenethiourea (2-imidazolidinethione) is a cyclic thio-ureine derivative used in rubber vulcanization and as a reagent. It fits HTS 2924.21.50.00 as 'other' ureines and derivatives; salts thereof per Chapter 29 definitions.