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Carbamic acid, bis(2-chloroethyl)-, 4-nitrophenyl ester, also known as 4-nitrophenyl bis(2-chloroethyl)carbamate, is a chemical compound with the molecular formula C9H11Cl2N2O4. It is a derivative of carbamic acid, featuring two chloroethyl groups attached to the nitrogen atom and a 4-nitrophenyl group as the esterifying agent. Carbamic acid, bis(2-chloroethyl)-, 4-nitrophenyl ester is primarily used as a chemical warfare agent, specifically as a blister agent, due to its ability to cause severe skin burns and respiratory issues upon exposure. It is also known by various other names, such as HN-1, HN-2, and HN-3, depending on the specific formulation. The compound is a colorless to pale yellow solid with a pungent odor and is highly toxic, posing significant health risks to humans and the environment.

6526-49-4

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6526-49-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 6526-49-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,5,2 and 6 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 6526-49:
(6*6)+(5*5)+(4*2)+(3*6)+(2*4)+(1*9)=104
104 % 10 = 4
So 6526-49-4 is a valid CAS Registry Number.

6526-49-4Relevant academic research and scientific papers

Process for making n-(diphenylmethyl)piperazines

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Page/Page column 7, (2009/06/27)

The compound of formula (8), in racemic or single enantiomeric form, is useful in making N-(diphenylmethyl)-piperazines such as cetirizine and levocetrizine. wherein Z is preferably phenyl.

Melanocyte-directed enzyme prodrug therapy (MDEPT): Development of second generation prodrugs for targeted treatment of malignant melanoma

Jordan, Allan M.,Khan, Tariq H.,Malkin, Hugh,Osborn, Helen M.I.,Photiou, Andrew,Riley, Patrick A.

, p. 1549 - 1558 (2007/10/03)

Evaluation of second generation prodrugs for MDEPT, by oximetry, has highlighted structural properties that are advantageous and disadvantageous for efficient oxidation using mushroom tyrosinase. In particular, a sterically undemanding prodrug bis-(2-chlo

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