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49643-13-2

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49643-13-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 49643-13-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,9,6,4 and 3 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 49643-13:
(7*4)+(6*9)+(5*6)+(4*4)+(3*3)+(2*1)+(1*3)=142
142 % 10 = 2
So 49643-13-2 is a valid CAS Registry Number.

49643-13-2Upstream product

49643-13-2Downstream Products

49643-13-2Relevant articles and documents

Factors Affecting the Facial Selectivity in the Hydroboration of Steroidal Δ5-Enes

Arantes, Simone F.,Hanson, James R.,Liman, Mansur D.,Manickavasagar, Revathy,Uyanik, Cavit

, p. 2381 - 2397 (2007/10/03)

A comparison between the facial selectivity observed in the hydroboration of some androst-5-enes and B-norandrost-5-enes does not parallel the differences between the calculated force field energies of α- and β-cyclobutane models suggesting that in this case the facial selectivity is not determined by the four centre transition state but by the ease of formation of the initial ?-complexes between the alkene and the borane.

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