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83115-56-4

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83115-56-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 83115-56-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,1,1 and 5 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 83115-56:
(7*8)+(6*3)+(5*1)+(4*1)+(3*5)+(2*5)+(1*6)=114
114 % 10 = 4
So 83115-56-4 is a valid CAS Registry Number.

83115-56-4Downstream Products

83115-56-4Relevant articles and documents

Synthesis of Naphthoquinone Antibiotics: Conjugate Addition/Electrophile Trapping with Acylnickel Carbonylate Anions

Semmelhack, M. F.,Keller, Leonard,Sato, Tadahisa,Spiess, E.

, p. 4382 - 4384 (1982)

Conjugate addition of nickel acylate complexes followed by quenching with allyl iodide provide key intermediates for the synthesis of nanomycin A and frenolicin

Conjugate Addition of Acylate-Nickel Complexes to Quinone Monoketals: Formal Synthesis of the Naphthoquinone Antibiotics Nanaomycin A and Deoxyfrenolicin

Semmelhack, M. F.,Keller, L.,Sato, T.,Spiess, E. J.,Wulff, W.

, p. 5566 - 5574 (2007/10/02)

A direct approach to the synthesis of isochromanone antibiotics such as nanaomycin A (2) and deoxyfrenolicin (3) is the conjugate addition of a carbonyl anion equivalent to the appropriate naphthoquinone monoketal followed by trapping with an allylic hali

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