R-16661

R-16661
Names
	IUPAC name 2-(Methoxy(methylthio)phosphinylimino)-3-ethyl-5-methyl-1,3-oxazolidine
	Other names Stauffer R-16661
Identifiers
CAS Number	22791-12-4;
3D model (JSmol)	Interactive image;
ChemSpider	4948264;
PubChem CID	6507077;
	InChI InChI=1S/C8H17N2O3PS/c1-5-10-6-7(2)13-8(10)9-14(11,12-3)15-4/h7H,5-6H2,1-4H3/b9-8+ Key: JCYANUVOCLKHHY-CMDGGOBGSA-N;
	SMILES CCN1CC(OC1=NP(=O)(OC)SC)C;
Properties
Chemical formula	C8H17N2O3PS
Molar mass	252.27 g·mol−1
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Extremely toxic
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	0.1 mg/kg (mice, oral); 0.1 mg/kg (rats, oral)
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

R-16661 is an extremely toxic organophosphate insecticide. With an oral LD50 of 0.1 mg/kg in mice and rats, R-16661 is about 10 times more toxic than aldicarb, the most toxic carbamate insecticide.^[1]^[2]

References

Names

IUPAC name 2-(Methoxy(methylthio)phosphinylimino)-3-ethyl-5-methyl-1,3-oxazolidine
Other names Stauffer R-16661
Identifiers
CAS Number	22791-12-4
3D model (JSmol)	Interactive image
ChemSpider	4948264
PubChem CID	6507077
InChI InChI=1S/C8H17N2O3PS/c1-5-10-6-7(2)13-8(10)9-14(11,12-3)15-4/h7H,5-6H2,1-4H3/b9-8+ Key: JCYANUVOCLKHHY-CMDGGOBGSA-N
SMILES CCN1CC(OC1=NP(=O)(OC)SC)C
Properties
Chemical formula	C₈H₁₇N₂O₃PS
Molar mass	252.27 g·mol⁻¹
Hazards
Occupational safety and health (OHS/OSH):
Main hazards	Extremely toxic
Lethal dose or concentration (LD, LC):
LD₅₀ (median dose)	0.1 mg/kg (mice, oral) 0.1 mg/kg (rats, oral)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references