Calcium Green 1

Name: Calcium Green 1

CAS Registry Number: 154719-40-1

Molecular Formula: Calcium Green 1 / 154719-40-1

CA Index Name: Glycine, N-[2-[2-[2-[bis(carboxy-methyl)amino]-5-[[(2',7'-dichloro-3',6'-dihydroxy-3-oxopiro[isobenzofuran-1(3H),9'-[9H]xanthen]-5-yl)carbon-yl]amino]phenoxy]ethoxy]phenyl]-N-(carboxymethyl)-, potassium salt (1:6)

Other Names: Glycine, N-[2-[2-[2-[bis(carboxymethyl) amino]-5-[[(2',7'-dichloro-3' ,6'-dihydroxy-3-oxospiro [isobenzofuran-1(3H),9' -[9H]xanthen]-5-yl)carbonyl] amino]phenoxy]ethoxy]phenyl]-N-(carboxymethyl)-, hexapotassium salt; Spiro[isobenzofuran-1(3H),9'-[9H]xanthene], glycine deriv.; Calcium Green 1; Calcium Green I

Merck Index Number: Not listed

Chemical / Dye Class: Xanthene

Molecular Formula: C₄₃H₂₇Cl₂K₆N₃O₁₆

Molecular Weight: 1147.19

Physical Form: Solid

Solubility: Soluble in water

Melting Point: > 250 °C

pK_a: 6.7

Absorption (λ_max): 506 nm

Emission (λ_max): 531 nm

Synthesis: Synthetic methods

Staining Applications: Calcium ions; cells, neurons