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199589-50-9

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199589-50-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 199589-50-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,9,5,8 and 9 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 199589-50:
(8*1)+(7*9)+(6*9)+(5*5)+(4*8)+(3*9)+(2*5)+(1*0)=219
219 % 10 = 9
So 199589-50-9 is a valid CAS Registry Number.

199589-50-9Downstream Products

199589-50-9Relevant articles and documents

Generation of gold carbenes in water: Efficient intermolecular trapping of the α-oxo gold carbenoids by indoles and anilines

Li, Long,Shu, Chao,Zhou, Bo,Yu, Yong-Fei,Xiao, Xin-Yu,Ye, Long-Wu

, p. 4057 - 4064 (2014/10/15)

The efficient intermolecular reaction of gold carbene intermediates, generated via gold-catalyzed alkyne oxidation, with indoles and anilines has been realized in aqueous media. Importantly, it was revealed for the first time that water could dramatically suppress the undesired over-oxidation, providing a general and practical solution to the problem of over-oxidation in gold-catalyzed intermolecular alkyne oxidation with external nucleophiles. This strategy was successfully applied to the formal synthesis of the Pfizer's chiral endothelin antagonist UK-350,926.

The design and synthesis of a novel series of indole derived selective ETA antagonists

Rawson, David J.,Dack, Kevin N.,Dickinson, Roger P.,James, Kim

, p. 125 - 128 (2007/10/03)

Conformational constraint has been used as the key design element in the identification of a series of potent and selective ETA antagonists. The most potent antagonist, 32, (ETA IC50 = 0.55 nM) is 722-fold selective over t

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