135940-07-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 135940-07-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,5,9,4 and 0 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 135940-07:
(8*1)+(7*3)+(6*5)+(5*9)+(4*4)+(3*0)+(2*0)+(1*7)=127
127 % 10 = 7
So 135940-07-7 is a valid CAS Registry Number.
135940-07-7Relevant articles and documents
Synthesis of 3,4-dihydro-2,2-dimethyl-2Hpyranoflavones
Kumar,Rajendra Prasad
, p. 158 - 160 (2007/10/03)
Treatment of 2-benzylidene derivatives 1a-k with potassium cyanide in ethanol furnish 3,4-dihydro-2,2-dimethyl-2H-pyranoflavones 2a-k in quantitative yield. The structures of the final products have been elucidated on the basis of spectral studies.
