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134373-08-3

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134373-08-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 134373-08-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,4,3,7 and 3 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 134373-08:
(8*1)+(7*3)+(6*4)+(5*3)+(4*7)+(3*3)+(2*0)+(1*8)=113
113 % 10 = 3
So 134373-08-3 is a valid CAS Registry Number.

134373-08-3Relevant articles and documents

A Novel Synthetic Approach to Pyrrolopyrimidine Antifolates

Miwa, Tetsuo,Hitaka, Takenori,Akimoto, Hiroshi

, p. 1696 - 1701 (2007/10/02)

A novel and efficient synthetic method for the synthesis of pyrrolopyrimidine antifolates is described.The key reaction of this method is the photo-initiated free radical addition of bromomalononitrile or ethyl bromocyanoacetate to an enol ether to afford the backbone skeleton of the targeted antifolate molecule.The key intermediates 3 or 4 are smoothly converted to the pyrrolopyrimidine antifolates 1 or 2 in three steps and in high overall yield.

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