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172295-01-1

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172295-01-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 172295-01-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,2,2,9 and 5 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 172295-01:
(8*1)+(7*7)+(6*2)+(5*2)+(4*9)+(3*5)+(2*0)+(1*1)=131
131 % 10 = 1
So 172295-01-1 is a valid CAS Registry Number.

172295-01-1Relevant articles and documents

Aluminium triflate catalysed cyclisation of unsaturated alcohols: novel synthesis of rose oxide and analogues

Coulombel, Lydie,Weiwer, Michel,Dunach, Elisabet

experimental part, p. 5788 - 5795 (2010/03/03)

Aluminium trifluoromethanesulfonate was used as an efficient catalyst for the cycloisomerisation of several unsaturated alcohols into cyclic ethers such as rose oxide and some of its ether analogues.

Substituent effects on the stereochemical course of electrophile- initiated tetrahydropyran-forming reactions: A possible stereoelectronic effect

Hart, David J.,Patterson, Suzanne,Zakarian, Alain

, p. 1025 - 1028 (2007/10/03)

A series of 4-penten-1,3-diol derivatives were prepared and treated with phenylselenenyl chloride to provide tetrahydropyrans. The stereochemical course of the reactions is consistent with a chair-like transition state in which the oxygen substituent at the 3-position largely occupies an axial site. A structurally related 3-methyl-4-penten-1-ol derivative gave a major product consistent with a chair transition state in which the methyl group occupies an equatorial site.

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