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1031849-56-5

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1031849-56-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1031849-56-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,3,1,8,4 and 9 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1031849-56:
(9*1)+(8*0)+(7*3)+(6*1)+(5*8)+(4*4)+(3*9)+(2*5)+(1*6)=135
135 % 10 = 5
So 1031849-56-5 is a valid CAS Registry Number.

1031849-56-5Downstream Products

1031849-56-5Relevant articles and documents

Synthesis of 4-aza analog of ramelteon: A novel tricyclic 1,6,7,8-tetrahydro-2H-cyclopenta[d]furo[2,3-b]pyridine derivative as melatonin receptor ligand

Koike, Tatsuki,Hoashi, Yasutaka,Takai, Takafumi,Uchikawa, Osamu

, p. 3009 - 3011 (2011)

The 4-aza analog of ramelteon (-)-1, a novel tricyclic 1,6,7,8-tetrahydro- 2H-cyclopenta[d]furo[2,3-b]pyridine derivative, was synthesized via the intramolecular inverse electron demand Diels-Alder reaction followed by fluoride-induced desilylation-cyclization.

TRICYCLIC COMPOUND AND MEDICAL USE THEREOF

-

Page/Page column 64, (2009/09/28)

The present invention provides a compound represented by the formula wherein R1 is a hydrocarbon group optionally having substituent(s), amino optionally having substituent(s), hydroxy optionally having a substituent or a heterocyclic group optionally having substituent(s), R2 is a hydrogen atom or a hydrocarbon group optionally having substituent(s), R3 is a hydrogen atom, a halogen atom, a hydrocarbon group optionally having substituent(s), amino optionally having substituent(s), hydroxy optionally having a substituent or mercapto optionally having a substituent, Xa to Xe are each a carbon atom or a nitrogen atom, m is 0 to 2, and ring A to ring C are each a ring optionally having substituent(s), or a salt thereof, which is useful as an agent for the prophylaxis or treatment of a disease relating to an action of melatonin, and the like.

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