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730991-28-3

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730991-28-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 730991-28-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,3,0,9,9 and 1 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 730991-28:
(8*7)+(7*3)+(6*0)+(5*9)+(4*9)+(3*1)+(2*2)+(1*8)=173
173 % 10 = 3
So 730991-28-3 is a valid CAS Registry Number.

730991-28-3Relevant articles and documents

Synthesis of novel highly active thiophene and benzothiophene containing diphosphine ligands and their use in the asymmetric allylation of catechol

Tietze, Lutz F.,Lohmann, J. Klaas,Stadler, Christian

, p. 1113 - 1116 (2004)

Novel thiophene and benzothiophene containing diphosphine ligands 5-8 with a chiral cyclohexyl diamine backbone have been prepared and used in the asymmetric allylation of catechol. The advantage of these new ligands is their high reactivity and excellent

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