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160721-28-8

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160721-28-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 160721-28-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,0,7,2 and 1 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 160721-28:
(8*1)+(7*6)+(6*0)+(5*7)+(4*2)+(3*1)+(2*2)+(1*8)=108
108 % 10 = 8
So 160721-28-8 is a valid CAS Registry Number.

160721-28-8Relevant articles and documents

CYCLOHEXANE DERIVATIVE COMPOUND

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Paragraph 0458-0465, (2013/08/15)

To find a therapeutic and/or prophylactic agent for gastrointestinal disorders and so on, the agent having excellent activity and high safety. A compound represented by the following general formula (I) or a pharmacologically acceptable salt thereof. In the formula, A represents an optionally substituted phenylene group; B represents an optionally substituted 4- to 10-membered heterocyclic group, an optionally substituted C6-C10 aryl group, or an optionally substituted C3-C10 cycloalkyl group; R1 represents a hydrogen atom or a C1-C3 alkyl group; R2 represents a hydrogen atom or a C1-C3 alkyl group; R3 represents a C1-C6 alkyl group, a C3-C10 cycloalkyl group, a C1-C3 alkoxy C1-C3 alkyl group, or a C1-C3 hydroxyalkyl group; R4 represents a hydrogen atom, a C1-C6 alkyl group, or a halogen atom; n represents an integer of 1 to 4; and X represents methylene, -O-, -NH-, -N(C1-C3 alkyl)-, -C(=O)-, -S-, -S(O)-, -S(O2)- or a single bond.

Regioselective synthesis of 1,8-dihydroxytetralins through a tandem reduction/intramolecular hydroxyalkylation of 4-(3-hydroxyphenyl)alkanoates

Guanti, Giuseppe,Banfi, Luca,Riva, Renata

, p. 11945 - 11966 (2007/10/02)

A series of 4-(3-hydroxyphenyl)butanoates 3 has been prepared and transformed into 1,8-dihydroxytetralins of general formula 2 by treatment with 2 equivalents of DIBALH followed by quenching with aqueous NH4Cl. A possible mechanism for this novel totally regioselective intramolecular hydroxyalkylation is suggested and the factors affecting the stability of 1,8-dihydroxytetralins 2 are also discussed.

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