An unsaturated heterocyclic compound having two nitrogen atoms in a six-membered ring, C4H4N2; r.d. 1.03; m.p. 52°C; b.p. 115°C. Pyrazine is a symmetric diazine.
Pyrazine
- COSMO-Sky-Med
- COSMO-SkyMed
- Cosmos rocket
- Cosmos satellites
- COSPAR
- Cossack
- costa
- cost accounting
- Costa Rica
- cost centre
- cost curve
- cost-effectiveness
- Costello, John A. (1891–1976)
- Coster, Dirk
- cost estimation
- cost estimation model
- cost function
- cost inflation
- cost, insurance, and freight
- cost minimization
- cost of capital
- cost of cracking adjustment
- cost of living index
- cost of protection
- Costonian