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803723-51-5

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803723-51-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 803723-51-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,0,3,7,2 and 3 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 803723-51:
(8*8)+(7*0)+(6*3)+(5*7)+(4*2)+(3*3)+(2*5)+(1*1)=145
145 % 10 = 5
So 803723-51-5 is a valid CAS Registry Number.

803723-51-5Downstream Products

803723-51-5Relevant articles and documents

A DOUBLE DIELS-ALDER REACTION OF A C2-SYMMETRIC BIS-DIENOPHILE: A NEW ENANTIOSELECTIVE APPROACH TO NATURAL LOGANIN

Takano, Seiichi,Kurotaki, Ayako,Ogasawara, Kunio

, p. 3991 - 3992 (2007/10/02)

Reaction of a chiral C2-symmetric bis-dienophile 1 and cyclopentadiene gave a mixture (3:2) of adducts 2 and 3 of which the major one was converted into a key intermediate 12 of loganin.The formation of the adducts is presumed via the anti-Felkin-Anh type active conformers, 14 and 15, respectively.

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