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205999-89-9

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205999-89-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 205999-89-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,5,9,9 and 9 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 205999-89:
(8*2)+(7*0)+(6*5)+(5*9)+(4*9)+(3*9)+(2*8)+(1*9)=179
179 % 10 = 9
So 205999-89-9 is a valid CAS Registry Number.

205999-89-9Relevant articles and documents

The new life of traditional water treatment flocculant polyaluminum chloride (PAC): A green and efficient micro-nano reactor catalyst in alcohol solvents

Bi, Shuxian,Hao, Pengcheng,Li, Xiang,Liang, Yanping,Liang, Yuwang,Liu, Wanyi,Wang, Gang,Wen, Jiantong,Zhan, Haijuan

, p. 655 - 663 (2022/01/22)

Polyaluminum chloride (PAC) is an inorganic polymer material that has the advantages of a simple preparation process and special electronic structure. It is considered to be the most efficient and widely used flocculation material for water treatment. In

Isolation of polyphenol compounds from olive waste and inhibition of their derivatives for α-glucosidase and α-amylase

Peng, Mijun,Peng, Sheng,Wang, Chengzhang,Wang, Zhihong

supporting information, p. 2398 - 2402 (2019/01/09)

Olive waste was used as a sustainable resource because it contained a variety of valuable compounds. The polyphenols active fraction from enrichment by microporous resin and extraction with ethyl acetate were analysed by different chromatographic methods.

Phthalic acid: A green, biodegradable and environmentally benign nature difunctional Br?nsted acid catalyst for the one-pot synthesis of 3,4-dihydropyrimidin-2-(1H)-one derivatives and substituted dihydro-2-oxypyrroles

Mohamadpour, Farzaneh,Lashkari, Mojtaba,Maghsoodlou, Malek Taher,Heydari, Reza

, p. 3811 - 3818 (2018/05/25)

Phthalic acid as a green, biodegradable economical and environmentally benign nature catalyst for the one-pot three-component Biginelli synthesis of 3,4-dihydropyrimidin-2-(1H)-one derivatives via β-keto esters, aldehyde derivatives and urea/thiourea under thermal and solvent-free conditions and one-pot four-component domino condensation of substituted dihydro-2-oxypyrrole by reaction of dialkyl acetylenedicarboxylate, formaldehyde and amines (aromatic and aliphatic) under ambient temperature with short reaction times and excellent yields is reported. The most benefits this procedure are such as green, biodegradable, inexpensive and non-toxic catalyst, eco-friendly, high catalytic activity, efficient, easily separation with no column chromatographic separation, simple operational procedures, one-pot, excellent yields, environmentally benign nature.

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