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254985-05-2

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254985-05-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 254985-05-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,4,9,8 and 5 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 254985-05:
(8*2)+(7*5)+(6*4)+(5*9)+(4*8)+(3*5)+(2*0)+(1*5)=172
172 % 10 = 2
So 254985-05-2 is a valid CAS Registry Number.

254985-05-2Relevant articles and documents

Accessing columbianetin-containing natural products via a domino on-water, in-water process

Beare, Kaitlin D.,McErlean, Christopher S.P.

supporting information, p. 1056 - 1058 (2013/04/10)

A domino on-water, in-water process has been developed for the rapid and efficient synthesis of (±)-columbianetin. This highlights the operational simplicity of on-water chemistry. The domino process forms the key step in the synthesis of the columbianetin-containing natural products (±)- columbianetin acetate, (±)-zosimin, (±)-libanorin and (±)-angelmarin.

Color regulation and stabilization of chromophore by Cys69 in photoactive yellow protein active center

Okamoto, Kentaro,Hamada, Norio,Okamura, Taka-Aki,Ueyama, Norikazu,Yamamoto, Hitoshi

experimental part, p. 3782 - 3791 (2009/10/23)

Model compounds of PYP chromophore were synthesized and characterized to investigate the role of the Cys69 residue in the active center, which has the intramolecular NH...OC hydrogen bond to the conjugated carbonyl oxygen and thioester linkage of the chro

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