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135055-91-3

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135055-91-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 135055-91-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,5,0,5 and 5 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 135055-91:
(8*1)+(7*3)+(6*5)+(5*0)+(4*5)+(3*5)+(2*9)+(1*1)=113
113 % 10 = 3
So 135055-91-3 is a valid CAS Registry Number.

135055-91-3Downstream Products

135055-91-3Relevant articles and documents

Fischer indolization of ethyl pyruvate 2-bis(2-methoxyphenyl)hydrazone and new insight into the mechanism of Fischer indolization. (Fischer indolization and its related compounds. XXVII)

Murakami,Watanabe,Otsuka,Iwata,Yamada,Yokoyama

, p. 1287 - 1293 (2007/10/02)

In connection with studies on the direction of cyclization in the Fischer indolization of substituted diphenylhydrazones, the Fischer indolization of ethyl pyruvate 2-bis(2-methoxyphenyl)hydrazone (6) was carried out. The result showed that cyclization in Fischer indolization of diphenylhydrazone does not always proceed to the electron-richer nucleus, but depends on the conformation of the enehydrazine. Thus, the Fischer indolization should proceed via a [3,3] sigmatropic route, with an electronic effect.

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