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Hematin  Any Similar Black Noun  A C H

Title hematin
Text
Merriam-Webster's Collegiate Dictionary
he·ma·tin

 \\ˈhē-mə-tən\\ noun
 DATE  1845
: a brownish-black or bluish-black derivative C34H33N4O5Fe of oxidized heme; also : any of several similar compounds
Webster's Third New International Dictionary, Unabridged
Search result show the entry is found in: reduced hematin

hem·a·tin
\ˈheməd.ə̇n, ˈhēm-\ noun
(-s)
Etymology: International Scientific Vocabulary hemat- + -in
1. or hem·a·tine \-əˌtēn, -əd.ə̇n\ : 
hematein
 hematin extract crystals >
— used especially of preparations for use in dyeing; see 
dye
 table I (under Natural Black 1)
2. 
 a. : a compound derived from oxidized heme and usually obtained in aqueous alkaline solutions or as a brownish black or bluish black solid C34H32N4O4FeOH by treatment of hemin chloride with alkali; ferriprotoporphyrin hydroxide
 b. : any of several similar compounds regarded as formed by the breakdown of hemoglobin especially in some pathological conditions
 c. : any of various similar iron-porphyrin derivatives or closely related pyrrole derivatives — compare heme 2

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