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50835-95-5

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50835-95-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 50835-95-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,0,8,3 and 5 respectively; the second part has 2 digits, 9 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 50835-95:
(7*5)+(6*0)+(5*8)+(4*3)+(3*5)+(2*9)+(1*5)=125
125 % 10 = 5
So 50835-95-5 is a valid CAS Registry Number.

50835-95-5Relevant articles and documents

Phosphine-initiated general base catalysis: Facile access to benzannulated 1,3-diheteroatom five-membered rings via double-Michael reactions of allenes

Szeto, Judy,Sriramurthy, Vardhineedi,Kwon, Ohyun

supporting information; experimental part, p. 5420 - 5423 (2011/11/29)

General base-catalyzed double-Michael reactions of allenes with various dinucleophiles are described. The reactions are facilitated most efficiently by a catalytic amount of trimethylphosphine, affording six types of C2-functionalized benzannulated five-m

Montmorillonite clay catalysis. Part 14. A facile synthesis of 2-substituted and 2,2-disubstituted 1,3-benzodioxoles

Li, Tong-Shuang,Li, Li-Jun,Lu, Bo,Yang, Feng

, p. 3561 - 3564 (2007/10/03)

A series of 2-substituted and 2,2-disubstituted 1,3-benzodioxoles have been synthesised by reaction of catechol and pyrogallol with corresponding aldehydes and ketones catalysed by montmorillonite KSF or K-10. The reactions are completed within 2.7-24 h to give satisfactory yields. Ketones give better yields than aldehydes, although highly sterically hindered ketones and diaryl ketones fail to react at all.

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