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130625-81-9

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130625-81-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 130625-81-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,0,6,2 and 5 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 130625-81:
(8*1)+(7*3)+(6*0)+(5*6)+(4*2)+(3*5)+(2*8)+(1*1)=99
99 % 10 = 9
So 130625-81-9 is a valid CAS Registry Number.

130625-81-9Relevant articles and documents

Total Synthesis of the Mycotoxin (-)-Zearalenone based on Macrocyclisation using a Cinnamyl Radical Intermediate

Hitchcock, Stephen A.,Pattenden, Gerald

, p. 1323 - 1328 (2007/10/02)

A concise synthesis of optically active (-)-zearalenone, which uses a novel 14-endo-trig macrocyclisation from a cinnamyl radical intermediate onto an α,β-enone electrophore as a key feature, is described.

A Diastereoselective Synthesis of the Polyketide Antibiotic Citrinin using Toluate Anion Chemistry

Barber, Jill A.,Staunton, James,Wilkinson, Michael R.

, p. 2101 - 2110 (2007/10/02)

The diastereoselectivity of various synthetic approaches to (+/-)-threo-3-(3,5-dihydroxy-2-methylphenyl)butan-2-ol ('Phenol B') (4), based on reactions of benzyl anions with electrophiles, has been investigated.The anion (9) derived from ethyl 2,4-dimethoxy-6-ethylbenzoate reacted with acetaldehyde to give mainly an erythro-product isolated as the lactone (12); acetylation with acetyl chloride to give a ketone, followed by reduction, gave mainly the required threo-lactone (11).An alternative route was frustrated by decomposition of the benzyl anion derived from 3,4-dihydro-6,8-dimethoxy-3-methyl-1H-2-benzopyran-1-one (17).Reduction of the carbonyl group of the threo-lactone (11) to a methyl gave the dimethyl ether of 'Phenol B', which was converted into (+/-)-citrinin (1).

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