American Chemical Society
Finding and Verifying CAS Registry Numbers® on STN®
— March 1993 —
Appendix 10 — Greek Letters
Conventions for Representing Greek Letters in Computer-Readable Files
| Symbol | Representation | Description |
|---|---|---|
| Α | .ALPHA. | Alpha |
| Β | .BETA. | Beta |
| Γ | .GAMMA. | Gamma |
| Δ | .DELTA. | Delta |
| Ε | .EPSILON. | Epsilon |
| Ζ | .ZETA. | Zeta |
| Η | .ETA. | Eta |
| Θ | .THETA. | Theta |
| Ι | .IOTA. | Iota |
| Κ | .KAPPA. | Kappa |
| Λ | .LAMBDA. | Lambda |
| Μ | .MU. | Mu |
| Ν | .NU. | Nu |
| Ξ | .XI | Xi |
| Ο | .OMICRON. | Omicron |
| Π | .PI. | Pi |
| Ρ | .RHO. | Rho |
| Σ | .SIGMA. | Sigma |
| Τ | .TAU. | Tau |
| Υ | .UPSILON. | Upsilon |
| Φ | .PHI. | Phi |
| Χ | .CHI. | Chi |
| Ψ | .PSI. | Psi |
| Ω | .OMEGA. | Omega |
| Symbol | Representation | Description |
|---|---|---|
| α | .alpha. | Alpha |
| β | .beta. | Beta |
| γ | .gamma. | Gamma |
| δ | .delta. | Delta |
 |
.vdelta. | Delta (variant) |
| ε | .epsilon. | Epsilon |
 |
.vepsiln. | Epsilon (variant) |
| ζ | .zeta. | Zeta |
| η | .eta. | Eta |
| θ | .theta. | Theta |
 |
.vtheta. | Theta (variant) |
| ι | .iota. | Iota |
| κ | .kappa. | Kappa |
| .vkapa. | Kappa (variant) | |
| λ | .lambda. | Lambda |
| μ | .mu. | Mu |
| ν | .nu. | Nu |
| ξ | .xi. | Xi |
| ο | .omicron. | Omicron |
| π | .pi. | Pi |
 |
.vpi. | Pi (variant) |
| ρ | .rho. | Rho |
| σ | .sigma. | Sigma |
 |
.vsigma. | Sigma (variant) |
| τ | .tau. | Tau |
| υ | .upsilon. | Upsilon |
| φ | .phi. | Phi |
 |
.vphi. | Phi (variant) |
| χ | .chi. | Chi |
| ψ | .psi. | Psi |
| ω | .omega. | Omega |