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42172-62-3

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42172-62-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 42172-62-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,1,7 and 2 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 42172-62:
(7*4)+(6*2)+(5*1)+(4*7)+(3*2)+(2*6)+(1*2)=93
93 % 10 = 3
So 42172-62-3 is a valid CAS Registry Number.

42172-62-3Relevant articles and documents

Facile Preparation of α-Cyano-α,ω-Diaryloligovinylenes: A New Class of Color-Tunable Solid Emitters

An, Peng,Xu, Nian-Sheng,Zhang, Hao-Li,Cao, Xiao-Ping,Shi, Zi-Fa,Wen, Wei

, p. 1959 - 1966 (2015/09/07)

An efficient Knoevenagel condensation reaction was used to construct a series of α-cyano-α,ω-diaryloligovinylenes, which show prominent fluorescence emission in the solid state. On investigating the effect of conjugation length on fluorescent properties,

Efficient and reusable amine-functionalized polyacrylonitrile fiber catalysts for Knoevenagel condensation in water

Li, Guowei,Xiao, Jia,Zhang, Wenqin

experimental part, p. 2234 - 2242 (2012/09/10)

A series of new fiber catalysts has been synthesized by aminating a commercially available polyacrylonitrile fiber with polyamines such as diethylenetriamine and triethylenetetramine. These fiber catalysts can efficiently catalyze the Knoevenagel condensation of benzaldehyde and ethyl cyanoacetate in water (yields: 95-98%). The triethylenetetramine aminated fiber catalyst was used to catalyze the condensations of a wide range of aromatic aldehydes and active methylene compounds and in each case, this catalyst performed well with yields higher than 93%. This fiber catalyst also exhibited excellent reusability (up to 21 times) and photostability.

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