90331-16-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 90331-16-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,3,3 and 1 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 90331-16:
(7*9)+(6*0)+(5*3)+(4*3)+(3*1)+(2*1)+(1*6)=101
101 % 10 = 1
So 90331-16-1 is a valid CAS Registry Number.
90331-16-1Relevant articles and documents
VILSMEIER REACTION WITH 4-PHENYL-2,3-DIHYDRO-1H-1,5-BENZODIAZEPIN-2-ONE
Solomko, Z. F.,Proshkina, V. N.,Bozhanova, N. Ya.,Loban, S. V.,Babichenko, L. N.
, p. 183 - 185 (1984)
4-Phenyl-2,3-dihydro-1H-1,5-benzodiazepin-2-one reacts with the Vilsmeier reagent to give a 3-dimethylaminomethylidene derivative, the hydrolysis of which leads to 3-formyl-4-phenyl-2,3-dihydro-1H-1,5-benzodiazepinone.