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180629-37-2

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180629-37-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 180629-37-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,0,6,2 and 9 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 180629-37:
(8*1)+(7*8)+(6*0)+(5*6)+(4*2)+(3*9)+(2*3)+(1*7)=142
142 % 10 = 2
So 180629-37-2 is a valid CAS Registry Number.

180629-37-2Relevant articles and documents

Simple and condensed β-lactams. Part 27. Reaction of 1-(4-methoxyphenyl)-4-(tetrazol-5-yl)azetidin-2-one and 1-(4-methoxyphenyl)-5-(tetrazol-5-yl-methyl)pyrrolidin-2-one with Cerium(IV) ammonium nitrate (CAN)

Giang, Le Thanh,Fetter, Jozsef,Lempert, Karoly,Kajtar-Peredy, Maria,Goemoery, Agnes

, p. 10169 - 10184 (2007/10/03)

Treatment of pyrrolidinone 3a with CAN under the usual conditions leads to formation of spiro compound 12, rather than to N-demethoxyphenylation. A study of the reactions of compound 12 with sodium chloride and sodium iodide furnished the proof for our assumption that the related non-isolable compounds 6 and 11 are the intermediates of the anomalous reactions of compounds 1a and 2a, respectively, with CAN.

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