sulfhemoglobin

noun

sulf·​he·​mo·​glo·​bin ˌsəlf-ˈhē-mə-ˌglō-bən 

variants or chiefly British sulphaemoglobin

-ˌhē-mə-ˈglō-bən

: a green pigment formed by the reaction of hemoglobin with a sulfide in the presence of oxygen or hydrogen peroxide and found in putrefied organs and cadavers