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81256-17-9

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81256-17-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81256-17-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,2,5 and 6 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 81256-17:
(7*8)+(6*1)+(5*2)+(4*5)+(3*6)+(2*1)+(1*7)=119
119 % 10 = 9
So 81256-17-9 is a valid CAS Registry Number.

81256-17-9Downstream Products

81256-17-9Relevant articles and documents

Hexafluoroisopropanol (HFIP)-prompted rearrangement of N-phenoxysulfonamides for the direct assembly of ortho-sulfonamide phenols: A combined experimental and computational study

Wang, Yi,Chen, Xiaoli,Lin, Shuang,Gao, Hui,Liu, Fu-Xiaomin,Zhou, Zhi,Yi, Wei

supporting information, (2022/01/08)

ortho-Sulfonamide phenols represent a class of attractive structural motifs in medicinal and synthetic chemistry. Herein an efficient metal-free rearrangement reaction has been developed for the construction of ortho-sulfonamide phenols via HFIP-prompted

Endocyclic Nucleophilic Substitution at Tetracoordinate Sulfur(VI)

Andersen, Kenneth K.,Chumpradit, Sumalee,McIntyre, Debra J.

, p. 4667 - 4675 (2007/10/02)

A search for endocyclic nucleophilic substitution at tetracoordinate sulfur(VI), usually sulfonyl sulfur, was carried out through the use of molecules so constructed that any intramolecular substitution process was forced to proceed through four-, five-,

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