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82408-32-0

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82408-32-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 82408-32-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,2,4,0 and 8 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 82408-32:
(7*8)+(6*2)+(5*4)+(4*0)+(3*8)+(2*3)+(1*2)=120
120 % 10 = 0
So 82408-32-0 is a valid CAS Registry Number.

82408-32-0Relevant articles and documents

Reactions of Thiols with Phenylglyoxal to Give Thiomandelic S-Esters Formation of Hemithioacetals and Their Rearrangement

Okuyama, Tadashi,Kimura, Kazumasa,Fueno, Takayuki

, p. 1493 - 1497 (1982)

Equilibrium constants Kh for the addition of 2-mercaptoethanol and glutathione to phenylglyoxal to form hemithioacetals were determined spectrophotometrically over the pH range 7-10.The observed Kh values decrease sigmoidally with pH as the thiol ionizes.Rearrangement of hemithioacetals formed from phenylglyoxal and various thiols was kinetically investigated.The rates increase with thiol concentration following a saturation curve to give Kh identical with the spectrophotometric value.The rearrangement is subject to general base catalysis.The solvent isotope effect on the rate of the rearrangement, kH2O/kd2O, is nearly 1.0; that on the equilibrium, KH2Oh/KD2Oh, is 0.38.The results strongly support the mechanism involving proton transfers through an enediol intermediate.

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