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561-89-7

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561-89-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 561-89-7 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 5,6 and 1 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 561-89:
(5*5)+(4*6)+(3*1)+(2*8)+(1*9)=77
77 % 10 = 7
So 561-89-7 is a valid CAS Registry Number.

561-89-7Upstream product

561-89-7Downstream Products

561-89-7Relevant articles and documents

Modular Terpenoid Construction via Catalytic Enantioselective Formation of All-Carbon Quaternary Centers: Total Synthesis of Oridamycin A, Triptoquinones B and C, and Isoiresin

Feng, Jiajie,Noack, Florian,Krische, Michael J.

supporting information, p. 12364 - 12367 (2016/10/07)

Total syntheses of oridamycin A, triptoquinones B and C, and isoiresin are accomplished from a common intermediate prepared via iridium-catalyzed alcohol C-H tert-(hydroxy)prenylation - a byproduct-free process that forms an all-carbon quaternary stereocenter with excellent control of diastereo- and enantioselectivity.

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