333340-99-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 333340-99-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,3,3,3,4 and 0 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 333340-99:
(8*3)+(7*3)+(6*3)+(5*3)+(4*4)+(3*0)+(2*9)+(1*9)=121
121 % 10 = 1
So 333340-99-1 is a valid CAS Registry Number.
333340-99-1Relevant articles and documents
Synthesis of substituted tetrahydrochromenes by the reactions of α, β-unsaturated cyanoesters with dimedone/1,3-cyclohexanedione
Ahmed, M.Giasuddin,Romman,Akhter, Kawsari,Jahan, Khorshada,Bhuiyan, M. Nazmul Hasan,Halim, M. Ershad
, p. 2822 - 2827 (2011)
Ethyl esters of 2-cyano-3-arylacrylic acid 1a-d (a=4-CH3-C 6H4-, b=4- N(CH3)2-C 6H4-, c=2-CH3O-C6H4-, d=2-Cl-C6H4-) reacted
