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(CAS registry number) 
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A. TOXIC CHEMICALS: 
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(1) 0-Alkyl (≤C10, incl. cycloalkyl) alkyl 
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(Me, Et, n-Pr or i-Pr) — phosphonofluoridates 
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e.g. Sarin: O-Isopropyl methylphosphonofluoridate 
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(107-44-8) 
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Soman: 0-Pinacolyl methylphosphonofluoridate 
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(96-64-0) 
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(2) 0-Alkyl (≤C10, incl. cycloalkyl) N, N-dialkyl 
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(Me, Et, n-Pr or i-Pr) — phosphoramidocyanidates 
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e.g. Tabun: O-Ethyl N,N-dimethyl 
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phosphoramidocyanidate 
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(77-81-6) 
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(3) 0-Alkyl (H or ≤C10, incl. cycloalkyl) S-2-dialkyl 
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(Me, Et, n-Pr or i-Pr)-aminoethyl alkyl 
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(Me, Et, n-Pr or i-Pr) phosphonothiolates and 
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corresponding alkylated or protonated salts 
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e.g. VX: O-ethyl S-2-diisopropylaminoethyl 
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methyl phosphonothiolate 
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(50782-69-9) 
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(4) Sulfur mustards: 
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2-Chlorcethylchlorome 
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(2625-76-5) 
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Mustard gas: Bis (2-chloroethyl) sulfide 
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(505-60-2) 
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Bis (2-chloroethylthio) methane 
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(63869-13-6) 
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Sesquimustard: 1,2-Bis (2-chloroethylthio) ethane 
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(3563-36-8) 
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1,3-Bis (2-chloroethylthio)-n-propane 
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(63905-10-2) 
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l,4-Bis (2-chloroethylthio)-n-butane 
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(142868-93-7) 
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1,5-Bis (2-chloroethylthio)-n-pentane 
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(142868-94-8) 
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Bis (2-chloroethylthiomethyl) ether 
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(63918-90-1) 
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0-Mustard: Bis (2-chloroethylthioethyl) ether 
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(63918-89-8) 
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(5) Lewisites: 
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Lewisite 1: 2-Chlorovinyldichloroarsine 
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(541-25-3) 
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Lewisite 2: Bis (2-chlorovinyl) chloroarsine 
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(40334-69-8) 
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Lewisite 3: Tris (2-chlorovinyl) arsine 
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(40334-70-1) 
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(6) Nitrogen mustards: 
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HN 1: Bis (2-chloroethyl) ethylamine 
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(538-07-8) 
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HN 2: Bis (2-chloroethyl) methylamine 
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(51-75-2) 
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HN 3: Tris (2-chloroethyl) amine 
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(555-77-1) 
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(7) Saxitoxin 
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(35523-89-8) 
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(8) Ricin 
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(9009-86-3) 
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B. PRECURSORS: 
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(9) Alkyl (Me, Et, n-Pr or i-Pr) phosphonyldifluorides 
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e.g. DF: Methylphosphonyldifluoride 
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(676-99-3) 
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(10) 0-Alkyl (H or ≤C10, incl. cycloalkyl) 0-2 dialkyl 
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(Me, Et, n-Pr or i-Pr)-aminoethyl alkyl 
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(Me, Et, n-Pr or i-Pr) phosphonites and corresponding alkylated or protonated salts 
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e.g. QL: O-Ethyl 0-2-diisopropylaminoethyl methylphosphonite 
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(57856-11-8) 
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(11) Chlorosarin: O-Isopropyl methylphosphonochloridate 
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(1445-76-7) 
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(12) Chlorosoman: O-Pinacolyl methylphosphonochloridate 
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(7040-57-5) 
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