2-Ethyl-2-thiopseudourea metaphosphate 21704-44-9 Carbamimidothioic acid, ethyl ester, compd. with metaphosphoric acid (1:1) Pseudourea, 2-ethyl-2-thio-, compd. with metaphosphoric acid (1:1) Pseudourea, 2-ethyl-2-thio-, metaphosphate S-Ethylisothiuronium metaphosphate