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71057-16-4

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71057-16-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 71057-16-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,0,5 and 7 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 71057-16:
(7*7)+(6*1)+(5*0)+(4*5)+(3*7)+(2*1)+(1*6)=104
104 % 10 = 4
So 71057-16-4 is a valid CAS Registry Number.

71057-16-4Downstream Products

71057-16-4Relevant articles and documents

Hard Acid and Soft Nucleophile Systems. 5. Ring-Opening Reaction of Lactones to ω-Alkylthio or ω-Arylthio Carboxylic Acids with Aluminum Halide and Thiol

Node, Manabu,Nishide, Kiyoharu,Ochiai, Masahito,Fuji, Kaoru,Fujita, Eiichi

, p. 5163 - 5166 (1981)

Lactones were converted into ω-alkylthio carboxylic acids in high yields through ω-carbon-oxygen bond cleavage when they were treated with aluminun halide and alkanethiol.The aluminum halide and arenethiol system has also been found to be useful for the preparation of the synthetically valuable ω-arylthio carboxylic acids from lactones.

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