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90003-09-1

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90003-09-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 90003-09-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,0,0 and 3 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 90003-09:
(7*9)+(6*0)+(5*0)+(4*0)+(3*3)+(2*0)+(1*9)=81
81 % 10 = 1
So 90003-09-1 is a valid CAS Registry Number.

90003-09-1Relevant articles and documents

Cross-coupling reactions of two different activated alkenes through tetrabutylammonium fluoride (TBAF) promoted deprotonation/activation strategy: A regioselective construction of quaternary carbon centers

Zhang, Jing-Li,Gong, Yue-Fa

supporting information; experimental part, p. 176 - 179 (2011/03/21)

A novel TBAF-promoted intermolecular crossed-conjugate addition has been developed. For a range of cyclic β-halo-α,β-unsaturated carbonyl compounds, the vinylogous enolates generated by deprotonation at the γ-position preferentially reacted with Michael a

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