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37439-78-4

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37439-78-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 37439-78-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,7,4,3 and 9 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 37439-78:
(7*3)+(6*7)+(5*4)+(4*3)+(3*9)+(2*7)+(1*8)=144
144 % 10 = 4
So 37439-78-4 is a valid CAS Registry Number.

37439-78-4Relevant articles and documents

Silver-Mediated Trifluoromethoxylation of (Hetero)aryldiazonium Tetrafluoroborates

Yang, Yu-Ming,Yao, Jian-Fei,Yan, Wei,Luo, Zhuangzhu,Tang, Zhen-Yu

supporting information, p. 8003 - 8007 (2019/10/11)

Here we report a silver-mediated trifluoromethoxylation of (hetero)aryldiazonium tetrafluoroborates by converting an aromatic amino group into an OCF3 group. This method, which can be considered to be a trifluoromethoxylation variation of the classic Sandmeyer-type reaction, uses readily available aryl and heteroaromatic amines as starting materials and AgOCF3 as trifluoromethoxylating reagents. The broad substrate scope and simple, mild reaction condition made this transformation a valuable method in constructing aryl-OCF3 bonds.

1-(PIPERIDIN-4-YL)-1H-INDOLE DERIVATIVE

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Page/Page column 34-35, (2010/11/28)

The present invention provides a compound represented by the formula (1) or a pharmacologically acceptable salt thereof, or a hydrate thereof (provided that a compound in which all of R4a, R4b, and R4c are hydrogen atoms is excluded.): [wherein R1 represents a hydrogen atom, R2 represents a hydrogen atom, R3 represents the formula: wherein R4a, R4b, and R4c are the same as or different from each other and each represents a hydrogen atom, a C1-6 alkyl group or a C1-6 alkoxy group, etc.]

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