2-Methyl-2,5-Dioxo-1-Oxa-2-Phospholane
2-Methyl-2,5-dioxo-1-oxa-2-phospholane is a cyclic phosphate ester explicitly named in HTS 2934.99.70.00, classified among other heterocyclic compounds. This organophosphorus compound with five-membered ring containing oxygen and phosphorus is used in polymer synthesis and as a phosphorylating agent.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If phosphorus directly linked to carbon without heterocyclic ring system
Heading 2931 covers organo-inorganic compounds; Chapter 29 notes exclude purely heterocyclic structures.
If acyclic phosphoric acid ester without ring closure
Phosphoric esters lacking heterocyclic character classified in heading 2919 (phosphoric esters).
If formulated as pesticide intermediate exceeding purity specs
Pesticide goods of specific chemical composition move to Chapter 38.
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Import Tips & Compliance
• Include NMR and GC-MS spectra in documentation to confirm cyclic phospholane structure distinguishing from acyclic phosphates
• Classify as UN 3265 (corrosive liquid, acidic) and ensure proper inner packaging for air/sea transport
• Watch for TSCA inventory listing; pre-registration required for first import into US
Related Products under HTS 2934.99.70.00
Morpholinoethyl Chloride Hydrochloride
Morpholinoethyl chloride hydrochloride is a specific heterocyclic compound used primarily as a pharmaceutical intermediate in drug synthesis. It falls under HTS 2934.99.70.00 as one of the explicitly named 'other heterocyclic compounds' in this subheading. This chemically defined organic compound contains a morpholine ring structure characteristic of Chapter 29.
6R-trans-7-Amino-3-Methyl-8-Oxo-5-Thia-1-Azabicyclo[4.2.0]Oct-2-Ene-2-Carboxylic Acid
This beta-lactam nucleus (6R-trans-7-amino-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid) is explicitly listed in HTS 2934.99.70.00 as a heterocyclic intermediate for cephalosporin antibiotic synthesis. The bicyclic ring system with sulfur and nitrogen heteroatoms qualifies it as an 'other heterocyclic compound' under heading 2934.
Morpholinoethyl Chloride Hydrochloride 98% USP Grade
Pharmaceutical grade morpholinoethyl chloride hydrochloride (98% purity, USP compliant) used in synthesis of anticancer drugs and antihistamines. Explicitly named in HTS 2934.99.70.00 as a heterocyclic pharmaceutical intermediate meeting Chapter 29 chemically defined compound criteria.
Cephamycin C Core Intermediate
Synthetic cephamycin C nucleus structurally analogous to the named bicyclic beta-lactam in HTS 2934.99.70.00, used in broad-spectrum antibiotic production. Classified as 'other heterocyclic compounds' due to the characteristic 5-thia-1-azabicyclo[4.2.0]octene ring system.