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212907-38-5

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212907-38-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 212907-38-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,2,9,0 and 7 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 212907-38:
(8*2)+(7*1)+(6*2)+(5*9)+(4*0)+(3*7)+(2*3)+(1*8)=115
115 % 10 = 5
So 212907-38-5 is a valid CAS Registry Number.

212907-38-5Relevant academic research and scientific papers

Skeletal stabilization: A basis for new classes of cyclophosphazanes

Hands, Robert M.,Helm, Monte,Noll, Bruce,Norman, Arlan D.

, p. 285 - 293 (1997)

Reactions involving skeletally stabilized intermediate phosphazanes yield new cyclophosphazanes. Thermolysis of C6H4(NH)2PPh (9) yields (PhP)4 and the λ5 phosphazane [C6H4(NH)2]2PPh (10); 10 upon cyclocondensation with PhPCl2 yields cis,trans- and cis,cis- spiro λ3-λ5-λ3 phosphazanes [C6H4(N)2PPh]2PPh (12). Reaction of the bis(silyl) cyclophosphazane C6H4(NSiMe3)2PPh with PhPCl2 yields triphosphazane C6H4[NP(Ph)Cl]2PPh (13); 13 with 1,2-(NH2)2C6H4 forms cyclotriphosphazane C6H4(N2PPh)(PPh)2C6H 4(NH)2 (14). 14 is the key intermediate in formation of several new [(C6H4N2PPh)]2-(PPh)(PR) (R = Ph, Me) cleft-containing cyclotetraphosphazanes (17). Synthesis and structural characterization of the new phosphazanes are described.

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