Cas 80907-15-9,(E)-3-(carbethoxymethylene)-2,7-dimethoxyflavanone

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Check Digit Verification of cas no

The CAS Registry Mumber 80907-15-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,0,9,0 and 7 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 80907-15:
(7*8)+(6*0)+(5*9)+(4*0)+(3*7)+(2*1)+(1*5)=129
129 % 10 = 9
So 80907-15-9 is a valid CAS Registry Number.

80907-15-9Upstream product

80907-15-9Downstream Products

80907-29-5 3-(carbethoxycyanomethyl)-7-methoxyflavone

80907-15-9Relevant articles and documents

3-Substituted Flavones. 1. Reduction of and Conjugate Addititon to (E)-2-Methoxy-3-(carbethoxymethylene)flavones

Smith, Manning A.,Klebanoff, Leonard E.,Morrow, Christopher T.,Sandel, Bonnie B.

, p. 1702 - 1706 (1982)

The methyl 3-hemiketal of 2-methoxy-3,4-flavandiones 3 react readily with the ylide ethyl (triphenylphosphoranylidene)acetate 12 to form (E)-2-methoxy-3-(carbethoxymethylene)flavanones 4.Compounds 4 are readily reduced by zinc and acetic acid to form the

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80907-15-9