![1-[1,2,3,4-Tetrahydro-1,3-dimethyl-6-(methylamino)-2,4-dioxo-5-pyrimidinyl]-1,2-hydrazinedicarboxylic]acid, 1,2-diethyl ester](https://www.synchem.de/wp-content/uploads/2017/05/wh226-247x124.png)
1-Benzoyl-5-(benzoylamino)-1H-pyrazole-4-carboxylic acid ethyl ester
wh224
N’-Phenylbenzohydrazide
wh222
![4,5-Dihydro-2-[(triphenylphosphoranylidene)amino]-3-thiophenecarbonitrile](https://www.synchem.de/wp-content/uploads/2017/05/wh221-247x124.png)
4,5-Dihydro-2-[(triphenylphosphoranylidene)amino]-3-thiophenecarbonitrile
![4,5-Dihydro-2-[(triphenylphosphoranylidene)amino]-3-thiophenecarboxylic acid methyl ester](https://www.synchem.de/wp-content/uploads/2017/05/wh220-247x124.png)
4,5-Dihydro-2-[(triphenylphosphoranylidene)amino]-3-thiophenecarboxylic acid methyl ester
![4,5,6,7-Tetrahydro-2-[(triphenylphosphoranylidene)amino]-benzo[b]thiophene-3-carboxylic acid ethyl ester](https://www.synchem.de/wp-content/uploads/2017/05/wh219-247x124.png)
4,5,6,7-Tetrahydro-2-[(triphenylphosphoranylidene)amino]-benzo[b]thiophene-3-carboxylic acid ethyl ester
![4,5,6,7-Tetrahydro-2-[(triphenylphosphoranylidene)amino]-benzo[b]thiophene-3-carbonitrile](https://www.synchem.de/wp-content/uploads/2017/05/wh218-247x124.png)