EA-3443

EA-3443

Identifiers
IUPAC name (1-methylpiperidin-4-yl) 2-cyclopentyl-2-hydroxy-2-phenylacetate
CAS Number	37830-21-0
PubChem (CID)	37838
ChemSpider	34695
ECHA InfoCard	100.110.337
Chemical and physical data
Formula	C19H27NO3
Molar mass	317.422 g/mol
3D model (Jmol)	Interactive image
SMILES C1CN(C)CCC1OC(=O)C(O)(C3CCCC3)c2ccccc2
InChI InChI=1S/C19H27NO3/c1-20-13-11-17(12-14-20)23-18(21)19(22,16-9-5-6-10-16)15-7-3-2-4-8-15/h2-4,7-8,16-17,22H,5-6,9-14H2,1H3 Key:DZFJGXMHIMAYMW-UHFFFAOYSA-N
(verify)

EA-3443 is a potent and long lasting anticholinergic deliriant drug, related to the chemical warfare agent 3-Quinuclidinyl benzilate (QNB). It was developed under contract to Edgewood Arsenal during the 1960s as part of the US military chemical weapons program, during research to improve upon the properties of earlier agents such as QNB.

The main advantages of EA-3443 were not only increased potency over QNB, but also a significantly improved central to peripheral effects ratio. Anticholinergic drugs produce both incapacitating deliriant effects through action in the brain, and a variety of distinctive physical symptoms such as dry mouth, dilated pupils, blurred vision and hot flushed skin, all of which together comprise the "anticholinergic syndrome" which is generally easy for doctors to diagnose. EA-3443 however is mainly selective for the brain, and when administered in a narrow dose range of around 0.3mg can produce the central effects of confusion, hallucinations and amnesia, but without producing significant physical symptoms, which was predicted to make poisoning with EA-3443 much more difficult to diagnose and treat. However despite these advantages, EA-3443 was never researched to the same extent as QNB or manufactured in bulk, and research into EA-3443 was discontinued along with the rest of the US chemical weapons program in the mid-1970s.^[1][2]

See also

• EA-3167
• N-methyl-3-piperidyl benzilate
• N-ethyl-3-piperidyl benzilate
• 3-Quinuclidinyl benzilate
• Ditran

References