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771491-25-9

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771491-25-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 771491-25-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,7,1,4,9 and 1 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 771491-25:
(8*7)+(7*7)+(6*1)+(5*4)+(4*9)+(3*1)+(2*2)+(1*5)=179
179 % 10 = 9
So 771491-25-9 is a valid CAS Registry Number.

771491-25-9Downstream Products

771491-25-9Relevant articles and documents

Highly efficient synthesis of tetrasubstituted 2,3-dihydropyrans by three-component 'one-pot' reaction

Li, Chao,Cai, Liang-Zhen,Liu, Xiao-Dong,Zhu, Shi-Zheng,Xing, Chun-Hui,Lu, Long

supporting information, p. 2171 - 2174 (2016/05/02)

With ammonium acetate as catalyst, three-component 'one-pot' reaction of β-keto perfluoroalkanesulfones, aldehydes, and vinyl ethers proceeded smoothly and afforded tetrasubstituted 2,3-dihydropyrans in moderate to excellent yields. Both aromatic and alip

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