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957799-23-4

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957799-23-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 957799-23-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,5,7,7,9 and 9 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 957799-23:
(8*9)+(7*5)+(6*7)+(5*7)+(4*9)+(3*9)+(2*2)+(1*3)=254
254 % 10 = 4
So 957799-23-4 is a valid CAS Registry Number.

957799-23-4Relevant academic research and scientific papers

The aza-Morita-Baylis-Hillman reaction of N-thiophosphoryl imines catalyzed by 1,3,5-triaza-7-phosphaadamantane (PTA) - Convenient synthesis of α-methylene-β-amino ketone or acid derivatives

Xu, Xinyuan,Wang, Chungui,Zhou, Zhenghong,Tang, Xiaofang,He, Zhengjie,Tang, Chuchi

, p. 4487 - 4491 (2007)

In the presence of an effective air-stable nucleophilic trialkylphosphane orgaocatalyst, 1,3,5-triaza-7-phosphaadamantane, N-diethoxythiophosphorylimines 1 and N-diphenylthiophosphinoylimines 2 exhibited good reactivity in the methyl vinyl ketone or methy

1,3,5-triaza-7-phosphaadamantane (PTA): A practical and versatile nucleophilic phosphine organocatalyst

Tang, Xiaofang,Zhang, Bo,He, Zhengrong,Gao, Ruili,He, Zhengjie

, p. 2007 - 2017 (2008/09/18)

In this paper, the air-stable and readily available 1,3,5-triaza-7- phosphaadmantane (PTA) is reported as a practical and versatile nucleophilic phosphine organocatalyst. Under the mediation of 15-30 mol% of PTA, various electrophiles like aldehydes and i

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