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156457-81-7

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156457-81-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 156457-81-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,6,4,5 and 7 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 156457-81:
(8*1)+(7*5)+(6*6)+(5*4)+(4*5)+(3*7)+(2*8)+(1*1)=157
157 % 10 = 7
So 156457-81-7 is a valid CAS Registry Number.

156457-81-7Relevant articles and documents

Synthesis of di- or tetrafunctionalized phosphorus macrocycles

Mitjaville,Caminade,Majoral

, p. 952 - 956 (1995)

The reaction of functionalized phosphodihydrazides RP(X)[NMeNH2]2 (R = Cl, N3) (1) with organic (2) or phosphorus (4) dialdehydes leads to the synthesis of di- or tetrafunctionalized phosphorus macrocycles 3a-d, 5a-h in go

Phosphite sodium salt modified amphipathic phosphorus-containing crown macromolecule nano micelle and preparation and application thereof

-

Paragraph 0086; 0092, (2021/08/25)

The invention relates to a phosphite sodium salt modified amphipathic phosphorus-containing crown macromolecule nano micelle and a preparation method and application thereof. The preparation method is simple, the controllability of the reaction process is high, and the operation is easy. Compared with the reported polyamide - amine type crown macromolecule nano-micelle, the nano material has higher encapsulation efficiency, loading rate and better anti-inflammatory effect, can effectively improve the treatment effect of the hydrophobic drug, and has good application prospects.

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