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1132757-67-5

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1132757-67-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1132757-67-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,3,2,7,5 and 7 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1132757-67:
(9*1)+(8*1)+(7*3)+(6*2)+(5*7)+(4*5)+(3*7)+(2*6)+(1*7)=145
145 % 10 = 5
So 1132757-67-5 is a valid CAS Registry Number.

1132757-67-5Downstream Products

1132757-67-5Relevant articles and documents

A sequential cycloaddition strategy for the synthesis of Alsmaphorazine B traces a path through a family of Alstonia alkaloids

Hong, Allen Y.,Vanderwal, Christopher D.

, p. 4160 - 4171 (2017)

Driven by a new biogenetic hypothesis, the first total synthesis of alsmaphorazine B and several related indole alkaloids has been achieved. Numerous early approaches proved unsuccessful owing to unproductive side reactivity; nevertheless, they provided important clues that guided the evolution of our strategy. Critical to our success was a major improvement in our Zincke aldehyde cycloaddition strategy, which permitted the efficient gram-scale synthesis of akuammicine. The sequential chemoselective oxidations of akuammicine leading up to the key oxidative rearrangement also yielded several biogenetically related indole alkaloids en route to alsmaphorazine B.

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