(2RS,3SR)-2-amino-3-(4-amino-phenyl)-3-hydroxy-propionic acid, also known as L-phenylalanine, is an essential amino acid that plays a crucial role in various biological processes. It is a chiral molecule with two chiral centers, resulting in four possible stereoisomers. The specific configuration mentioned, (2RS,3SR), indicates that the molecule has one R configuration at the 2nd carbon and one S configuration at the 3rd carbon. L-phenylalanine is a key component in the synthesis of various neurotransmitters, such as dopamine, norepinephrine, and epinephrine, and is also a precursor in the production of melanin, the pigment responsible for skin, hair, and eye color. Its importance in human nutrition and its role in various metabolic pathways make it a significant chemical in the field of biochemistry and nutrition.
The CAS Registry Mumber 5872-84-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,8,7 and 2 respectively; the second part has 2 digits, 8 and 4 respectively. Calculate Digit Verification of CAS Registry Number 5872-84: (6*5)+(5*8)+(4*7)+(3*2)+(2*8)+(1*4)=124 124 % 10 = 4 So 5872-84-4 is a valid CAS Registry Number.