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129646-49-7

129646-49-7

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129646-49-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 129646-49-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,6,4 and 6 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 129646-49:
(8*1)+(7*2)+(6*9)+(5*6)+(4*4)+(3*6)+(2*4)+(1*9)=157
157 % 10 = 7
So 129646-49-7 is a valid CAS Registry Number.

129646-49-7Downstream Products

129646-49-7Relevant articles and documents

Inter- and Intramolecular Hetero Diels-Alder Reactions, 31. Synthesis of D-Homoestrone Derivatives by Tandem Knoevenagel Hetero Diels-Alder Reactions from Natural Estrone

Tietze, Lutz F.,Woelfling, Janos,Schneider, Gyula

, p. 591 - 594 (2007/10/02)

The tandem Knoevenagel hetero Diels-Alder reaction of the secoestrone derivative 8 with dimethylbarbituric acid (9a), Meldrum's acid (9b), and the pyrazolones 13a-c stereoselectively affords D-homoestrone derivatives 11a, 12, and 14a-c, respectively, with

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