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6α-[(2-Amino-1-oxohexyl)amino]penicillanic acid, also known as 6-aminopenicillanic acid (6-APA), is a key intermediate compound in the synthesis of semi-synthetic penicillins. It is derived from the chemical modification of the penicillin nucleus, which involves the removal of the side chain from the parent penicillin molecule. 6-APA serves as a crucial building block for the development of various semi-synthetic penicillins, such as ampicillin and amoxicillin, which possess broader-spectrum antibiotic activity compared to natural penicillins. The chemical structure of 6-APA consists of a β-lactam ring, a thiazolidine ring, and an amino group attached to the 6α position, which allows for the attachment of different side chains to create new penicillin derivatives with improved properties.

3381-65-5

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3381-65-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 3381-65-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,3,8 and 1 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 3381-65:
(6*3)+(5*3)+(4*8)+(3*1)+(2*6)+(1*5)=85
85 % 10 = 5
So 3381-65-5 is a valid CAS Registry Number.

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