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130641-22-4

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130641-22-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 130641-22-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,0,6,4 and 1 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 130641-22:
(8*1)+(7*3)+(6*0)+(5*6)+(4*4)+(3*1)+(2*2)+(1*2)=84
84 % 10 = 4
So 130641-22-4 is a valid CAS Registry Number.

130641-22-4Downstream Products

130641-22-4Relevant articles and documents

Stability and kinetics of degradation of imipenem in aqueous solution

Smith,Dezeny,Douglas

, p. 732 - 740 (1990)

In weakly acidic solution, the broad-spectrum antibiotic imipenem undergoes complex oligomerization initiated by intermolecular carboxyl group attack on the β-lactam group. In weakly alkaline solution, intermolecular reaction between the β-lactam and formimidoyl groups occurs instead. Both β-lactam and formimidoyl groups also hydrolyze at pH-dependent rates. Complex decomposition schemes were determined in kinetic studies at pH 4.0 and 9.0-9.5 using HPLC and mathematical models. The rates of the several initial reactions, calculated as functions of pH and imipenem concentration by fitting the models to kinetic data, fully account for imipenem decomposition rates throughout the neutral pH range.

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