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1132981-62-4

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1132981-62-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1132981-62-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,3,2,9,8 and 1 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1132981-62:
(9*1)+(8*1)+(7*3)+(6*2)+(5*9)+(4*8)+(3*1)+(2*6)+(1*2)=144
144 % 10 = 4
So 1132981-62-4 is a valid CAS Registry Number.

1132981-62-4Relevant articles and documents

Synthesis of the furo[2,3-b]chromene ring system of hyperaspindols a and B

Paterson, Danielle L.,Barker, David

, p. 265 - 270 (2015)

The synthesis of the unique furo[2,3-b]chromene ring system found in hyperaspidinols A and B, acylphloroglucinols from Hypericum chinense has been achieved in twelve steps. By comparison of the NMR spectra of the synthesized compounds with those of the natural products, a relative stereochemistry is suggested, especially that of the ketal carbon.

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