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120056-34-0

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120056-34-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 120056-34-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,0,0,5 and 6 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 120056-34:
(8*1)+(7*2)+(6*0)+(5*0)+(4*5)+(3*6)+(2*3)+(1*4)=70
70 % 10 = 0
So 120056-34-0 is a valid CAS Registry Number.

120056-34-0Relevant articles and documents

Structural Requirements for Catalysis by Chorismate Mutase

Pawlak, John L.,Padykula, Robert E.,Kronis, John D.,Aleksejczyk, Robert A.,Berchtold, Glenn A.

, p. 3374 - 3381 (2007/10/02)

The structural requirements for mutase-catalyzed Claisen rearrangement by chorismate mutase-prephenate dehydrogenase from Escherichia coli have been established.The chorismate analogue lacking the carboxyl group at C1 (5) was not a substrate for chorismate mutase.The methyl ether of chorismate was a good substrate for chorismate mutase (kcat/kuncat = 2.0*1E4).The half-lives for Claisen rearrangement and aromatization of 4-deshydroxychorismate (19) in D2O at 30 deg C, pD 7.2, were 3.5 and 8 min, respectively.In the presence of large amounts of enzyme,it was demonstrated that the Claisen rearrangement of enantiomerically pure 19 was accelerated at least 100-fold by chorismate mutase.Data available from other studies have demonstrated that ester 3 is not a substrate for chorismate mutase, and the kcat/kuncat for dihydrochorismate analogue 4 is similar to that for chorismate.These results establish that the only functional groups required on the allyl vinyl ether moiety of chorismate for mutase-catalyzed rearrangement are the two carboxylate groups.

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