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321906-45-0

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321906-45-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 321906-45-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,2,1,9,0 and 6 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 321906-45:
(8*3)+(7*2)+(6*1)+(5*9)+(4*0)+(3*6)+(2*4)+(1*5)=120
120 % 10 = 0
So 321906-45-0 is a valid CAS Registry Number.

321906-45-0Downstream Products

321906-45-0Relevant articles and documents

Photochemistry of 4H,7H-benzo[1,2-c:4,3-c′]dipyran-4,7-dione, a twofold isocoumarin

Kinder, Michael A.,Margaretha, Paul

, p. 4253 - 4255 (2007/10/03)

(equation presented) 1 6 92% The title compound 1 was synthesized starting from 1,2-bis(2-hydroxyethyl)benzene (2). Irradiation (350 nm) of 1 in CH3CN affords the all-cis-dimer 6 in >90% yield. Irradiation (>390 nm) of 1 in the presence of tetrachloroethene leads selectively to the monocyclobuta adduct 8, which on subsequent irradiation is converted to a 4:1 mixture of biscyclobuta derivatives 9 and 10.

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