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860504-11-6

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860504-11-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 860504-11-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,6,0,5,0 and 4 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 860504-11:
(8*8)+(7*6)+(6*0)+(5*5)+(4*0)+(3*4)+(2*1)+(1*1)=146
146 % 10 = 6
So 860504-11-6 is a valid CAS Registry Number.

860504-11-6Relevant articles and documents

Concise synthesis of chafurosides A and B

Furuta, Takumi,Nakayama, Miho,Suzuki, Hirotaka,Tajimi, Hiroko,Inai, Makoto,Nukaya, Haruo,Wakimoto, Toshiyuki,Kan, Toshiyuki

supporting information; experimental part, p. 2233 - 2236 (2009/10/02)

The regioselective synthesis of chafurosides A (1) and B (2) from the same methyl ketone 5 was accomplished using a novel protecting group strategy. Both flavone rings were constructed from β-diketone intermediate 4, which was readily obtained by condensation of an acyl donor and ketone 5. Construction of the dihydrofuran ring was achieved via an intramolecular Mitsunobu reaction.

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