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131549-99-0

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131549-99-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 131549-99-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,5,4 and 9 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 131549-99:
(8*1)+(7*3)+(6*1)+(5*5)+(4*4)+(3*9)+(2*9)+(1*9)=130
130 % 10 = 0
So 131549-99-0 is a valid CAS Registry Number.

131549-99-0Relevant articles and documents

Structural elucidation of the cyclic products formed by the reaction of 2,3-O-isopropylidene derivatives of aldehydo-aldose with allylsilanes, vinyl ethers, or vinyl sulfides in the presence of boron trifluoride etherate

Sugimura

, p. 5909 - 5912 (1990)

The structural elucidation of the cyclic products derived from 2,3-O-isopropylidene derivatives of aldehydo-aldose and allylsilanes, vinyl ethers, or vinyl sulfides indicated that tetrahydrofuran derivatives were formed by cyclization accompanied with migration of the isopropylidene group.

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