L-cystine disulfoxide, also known as cystine, is a disulfide form of the amino acid cysteine. It is a non-essential amino acid that plays a crucial role in the formation of proteins, as it contains a disulfide bond between two cysteine molecules. This bond is essential for the structure and stability of proteins, as it allows them to form complex shapes and maintain their functionality. L-cystine disulfoxide is commonly found in hair, skin, and nails, and it is also used as a dietary supplement to support hair, skin, and nail health. Additionally, it has been studied for its potential role in antioxidant activity and immune system support.
The CAS Registry Mumber 533-77-7 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 5,3 and 3 respectively; the second part has 2 digits, 7 and 7 respectively. Calculate Digit Verification of CAS Registry Number 533-77: (5*5)+(4*3)+(3*3)+(2*7)+(1*7)=67 67 % 10 = 7 So 533-77-7 is a valid CAS Registry Number.