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256526-06-4

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256526-06-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 256526-06-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,6,5,2 and 6 respectively; the second part has 2 digits, 0 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 256526-06:
(8*2)+(7*5)+(6*6)+(5*5)+(4*2)+(3*6)+(2*0)+(1*6)=144
144 % 10 = 4
So 256526-06-4 is a valid CAS Registry Number.

256526-06-4Relevant articles and documents

Chemoenzymatic synthesis of (S)-8-O-methylmellein by Candida parapsilosis carbonyl reductase

Schubert, Thomas,Kula, Maria-Regina,Mueller, Michael

, p. 2045 - 2048 (1999)

A screening of various orthosubstituted 2-oxopropylbenzene derivatives with carbonyl reductases and alcohol dehydrogenases, respectively, revealed that compounds containing ortho-substituents with only little steric demand are feasible substrates. (S)-8-O-Methylmellein (1) was synthesized by stereoselective enzymatic reduction of 2-methoxy-6-(2-oxopropyl)benzonitrile (5i) with Candida parapsilosis carbonyl reductase as the key step, and completed by a one-step hydrolysis and intramolecular cyclization.

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