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70902-31-7

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70902-31-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 70902-31-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,0,9,0 and 2 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 70902-31:
(7*7)+(6*0)+(5*9)+(4*0)+(3*2)+(2*3)+(1*1)=107
107 % 10 = 7
So 70902-31-7 is a valid CAS Registry Number.

70902-31-7Downstream Products

70902-31-7Relevant articles and documents

Total Synthesis of Dehydroambliol-A and Its Unnatural Z Isomer

Magatti, Charles V.,Kaminski, James J.,Rothberg, Irvin

, p. 3102 - 3108 (2007/10/02)

Convergent total syntheses of dehydroambliol-A (1a), its unnatural Z isomer 1b, and ambliofuran (2) are described.The syntheses utilized 2-(3'-furyl)-1,3-dithiane (6) as a common intermediate.Analysis of their proton and carbon magnetic resonance spectra confirm that in the natural product dehydroambliol-A and in synthetic dehydroambliol-A the Δ7-bond possesses the E geometry, while in the unnatural isomer of dehydroambliol-A, the Δ7-bond is of the Z configuration.

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