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Substance Name: Hemoglobin A2
RN: 9034-53-1


  • An adult hemoglobin component normally present in hemolysates from human erythrocytes in concentrations of about 3%. The hemoglobin is composed of two alpha chains and two delta chains. The percentage of HbA2 varies in some hematologic disorders, but is about double in beta-thalassemia.
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Names and Synonyms

Name of Substance

  • Hemoglobin A2

MeSH Heading

  • Hemoglobin A2


  • EINECS 232-897-1

Systematic Name

  • Hemoglobin A2

Registry Numbers

CAS Registry Number

  • 9034-53-1

System Generated Number

  • 0009034531