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1229515-77-8

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1229515-77-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1229515-77-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,2,9,5,1 and 5 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1229515-77:
(9*1)+(8*2)+(7*2)+(6*9)+(5*5)+(4*1)+(3*5)+(2*7)+(1*7)=158
158 % 10 = 8
So 1229515-77-8 is a valid CAS Registry Number.

1229515-77-8Relevant articles and documents

New synthetic routes to biologically interesting geranylated flavanones and geranylated chalcones: First total synthesis of (±)-prostratol F, xanthoangelol, and (±)-lespeol

Jung, Doo Hwan,Lee, Yong Rok,Kim, Sung Hong

experimental part, p. 635 - 647 (2010/07/02)

A new and efficient synthetic approach to biologically interesting geranylated flavanones and geranylated chalcones is described. Thus, the first total syntheses of the geranylated flavanones (±)-prostratol F (1), (±)-8-geranyl-3′,4′,7-trihydroxyflavanone (2), and (±)-6-geranyl-5,7-dihydroxy-3′,4′-dimethoxyflavanone (3) were carried out starting from 2,4-dihydroxyacetophenone (10) and 2,4,6-trihydroxyacethophenone (17) in five to six steps (Schemes 2 and 3). The geranylated chalcones xanthoangelol (4), 3-geranyl-2,3′,4,4′- tetrahydroxychalcone (5), (±)-lespeol (6), and lespeol derivatives (±)-7-9 were synthesized starting from 2,4-dihydroxyacetophenone (10) in three to four steps (Schemes 2 and 6).

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