Cas 181040-59-5,5,8-Dihydroxy-1-methoxy-7-p-tolylsulfanyl-1,4,4a,9a-tetrahydro-1,4-ethano-anthraquinone

181040-59-5

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Basic information

Product Name: 5,8-Dihydroxy-1-methoxy-7-p-tolylsulfanyl-1,4,4a,9a-tetrahydro-1,4-ethano-anthraquinone
Synonyms: 5,8-Dihydroxy-1-methoxy-7-p-tolylsulfanyl-1,4,4a,9a-tetrahydro-1,4-ethano-anthraquinone
CAS NO:181040-59-5
Molecular Formula:
Molecular Weight: 422.502
EINECS: N/A
Product Categories: N/A

Chemical Properties

Melting Point: N/A
Boiling Point: N/A
Flash Point: N/A
Appearance: N/A
Density: N/A
Refractive Index: N/A
Storage Temp.: N/A
Solubility: N/A
CAS DataBase Reference: 5,8-Dihydroxy-1-methoxy-7-p-tolylsulfanyl-1,4,4a,9a-tetrahydro-1,4-ethano-anthraquinone(CAS DataBase Reference)
NIST Chemistry Reference: 5,8-Dihydroxy-1-methoxy-7-p-tolylsulfanyl-1,4,4a,9a-tetrahydro-1,4-ethano-anthraquinone(181040-59-5)
EPA Substance Registry System: 5,8-Dihydroxy-1-methoxy-7-p-tolylsulfanyl-1,4,4a,9a-tetrahydro-1,4-ethano-anthraquinone(181040-59-5)

Safety Data

Hazard Codes: N/A
Statements: N/A
Safety Statements: N/A
WGK Germany:
RTECS:
HazardClass: N/A
PackingGroup: N/A
Hazardous Substances Data: 181040-59-5(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 181040-59-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,1,0,4 and 0 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 181040-59:
(8*1)+(7*8)+(6*1)+(5*0)+(4*4)+(3*0)+(2*5)+(1*9)=105
105 % 10 = 5
So 181040-59-5 is a valid CAS Registry Number.

181040-59-5Upstream product

2161-90-2 1-methoxy-1,3-cyclohexadiene

181040-59-5Downstream Products

181040-59-5Relevant academic research and scientific papers

Remote regiocontrol by a thioether group in Diels-Alder reactions of naphthazarin: Regioselective access to tetracyclic polyhydroxyquinones

Carreno, M. Carmen,Garcia Ruano, Jose L.,Urbano, Antonio

, p. 6136 - 6138 (1996)

The synthesis of tetracyclic polyhydroxyquinones 5a and 5b was achieved through a sequence involving two Diels-Alder reactions with 1-methoxy-1,3-cyclohexadiene: the first with 2-(p-tolylthio)naphthazarin and the second on the resulting tricyclic derivative previously transformed into a (p-tolylsulfinyl)naphthazarin. The success of this strategy stemmed from the efficient remote regiocontrol exerted by the thioether substituent in the first step.

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