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221699-65-6

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221699-65-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 221699-65-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,6,9 and 9 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 221699-65:
(8*2)+(7*2)+(6*1)+(5*6)+(4*9)+(3*9)+(2*6)+(1*5)=146
146 % 10 = 6
So 221699-65-6 is a valid CAS Registry Number.

221699-65-6Relevant articles and documents

Stereochemical course of the hydrogen migration in the boron trifluoride etherate-catalyzed rearrangement of 1,1-disubstituted epoxides

Hara, Noriyuki,Mochizuki, Akiyoshi,Tatara, Akinori,Fujimoto, Yoshinori

, p. 1859 - 1868 (2000)

Mechanistic studies on the BF3.Et2O-catalyzed rearrangement of optically active, regioselectively deuterated 1,1-disubstituted epoxides to aldehydic products revealed that the two hydrogens migrate at the migration terminus with oppo

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