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135581-68-9

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135581-68-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 135581-68-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,5,5,8 and 1 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 135581-68:
(8*1)+(7*3)+(6*5)+(5*5)+(4*8)+(3*1)+(2*6)+(1*8)=139
139 % 10 = 9
So 135581-68-9 is a valid CAS Registry Number.

135581-68-9Downstream Products

135581-68-9Relevant articles and documents

REDUCTION OF 5-URACILYLMETHYLENEPYRIDINIUM SALTS BY THIOLS. A MODEL OF THE REDUCTION STEP OF THE THYMIDYLATE SYNTHASE REACTION

Vega, Erwin,Rood, Geertrudia,Waard, Eduard R. de,Pandit, Upendra K.

, p. 4361 - 4368 (2007/10/02)

Reaction of 1-(5-uracilylmethylene)pyridinium salts with thiols leads to the formation of the corresponding thymine derivatives.This transformation of a uracil derivative to the corresponding thymine is explained on the basis of the formation of an exocyclicmethylene intermediate, analogous to that proposed in the thymidylate synthase reaction, followed by its reduction by additional thiol, presumably involving a radical mechanism.

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