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640721-01-3

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640721-01-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 640721-01-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,0,7,2 and 1 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 640721-01:
(8*6)+(7*4)+(6*0)+(5*7)+(4*2)+(3*1)+(2*0)+(1*1)=123
123 % 10 = 3
So 640721-01-3 is a valid CAS Registry Number.

640721-01-3Relevant articles and documents

Coumarin-4-ylmethoxycarbonyls as Phototriggers for Alcohols and Phenols

Suzuki, Akinobu Z.,Watanabe, Takayoshi,Kawamoto, Mika,Nishiyama, Keiko,Yamashita, Hirotaka,Ishii, Megumi,Iwamura, Michiko,Furuta, Toshiaki

, p. 4867 - 4870 (2007/10/03)

(Equation Presented) Caged compounds can be used to regulate the spatial and temporal dynamics of signaling molecules in live cells. Photochemical properties of coumarin-4-ylmethoxy carbonates (1a-d) are investigated to construct caged compounds of hydroxy-containing molecules. All the compounds possess desired properties as phototriggers for alcohols and phenols. The 6-bromo-7-hydroxycoumarin-4-ylmethoxycarbonyl (Bhcmoc) group has the highest photochemical efficiency and is applied to make caged compounds of 1,2-dioctanoylglycerol (diC8), Tyr-OMe, and adenosine.

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