Cas 33987-89-2,1-(isopropylsulfonyl)-2-phenylacetylene

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Check Digit Verification of cas no

The CAS Registry Mumber 33987-89-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,3,9,8 and 7 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 33987-89:
(7*3)+(6*3)+(5*9)+(4*8)+(3*7)+(2*8)+(1*9)=162
162 % 10 = 2
So 33987-89-2 is a valid CAS Registry Number.

33987-89-2Upstream product

33987-89-2Downstream Products

1612-03-9 3-methyl-1-phenyl-but-1-yne

33987-89-2Relevant academic research and scientific papers

Regiodivergent Rhodium(I)-Catalyzed Azide-Alkyne Cycloaddition (RhAAC) to Access Either Fully Substituted Sulfonyl-1,2,3-triazoles under Mild Conditions

Song, Wangze,Zheng, Nan,Li, Ming,Dong, Kun,Li, Junhao,Ullah, Karim,Zheng, Yubin

, p. 6705 - 6709 (2018)

A regiodivergent Rh(I)-catalyzed azide-alkyne cycloaddition (RhAAC) was developed for the synthesis of both fully substituted 4-sulfonyl-1,2,3-triazoles and 5-sulfonyl-1,2,3-triazoles in high regioselectivities and yields under mild conditions in one step

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