138964-41-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138964-41-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,9,6 and 4 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 138964-41:
(8*1)+(7*3)+(6*8)+(5*9)+(4*6)+(3*4)+(2*4)+(1*1)=167
167 % 10 = 7
So 138964-41-7 is a valid CAS Registry Number.
138964-41-7Relevant academic research and scientific papers
Preparation of 2-Formyl-4-nitropyrroles
Ono, Noboru,Muratani, Emiko,Ogawa, Takuji
, p. 2053 - 2055 (2007/10/02)
The Vilsmeier reaction of 3-nitropyrroles which are prepared by the reaction of nitroalkenes with the sodium salt of tosylmethylisocyanide gives 2-formyl-4-nitropyrroles in good yields
