Hemoglobin Bart's is a type of fetal hemoglobin, specifically Hb Bart's (γ4), which is found in high levels in babies with alpha-thalassemia. It is produced when there is a deficiency or absence of alpha-globin chains in hemoglobin, leading to an overproduction of gamma-globin chains. This results in a form of hemoglobin that has a higher affinity for oxygen than normal adult hemoglobin, which can cause issues with oxygen delivery to tissues. Hemoglobin Bart's is typically present in small amounts in the blood of newborns, but in cases of alpha-thalassemia, it can accumulate to significant levels, potentially leading to severe anemia and other complications.
The CAS Registry Mumber 9056-09-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 9,0,5 and 6 respectively; the second part has 2 digits, 0 and 9 respectively. Calculate Digit Verification of CAS Registry Number 9056-09: (6*9)+(5*0)+(4*5)+(3*6)+(2*0)+(1*9)=101 101 % 10 = 1 So 9056-09-1 is a valid CAS Registry Number.