250222-14-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 250222-14-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,0,2,2 and 2 respectively; the second part has 2 digits, 1 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 250222-14:
(8*2)+(7*5)+(6*0)+(5*2)+(4*2)+(3*2)+(2*1)+(1*4)=81
81 % 10 = 1
So 250222-14-1 is a valid CAS Registry Number.
250222-14-1Relevant articles and documents
Condensation of aromatic aldehydes with acidic methylene compounds without catalyst
Shi, Daqing,Wang, Yucheng,Lu, Zaisheng,Dai, Guiyuan
, p. 713 - 726 (2000)
The condensation of aromatic aldehyde with isopropylidene malonate or 5,5-dimethyl-1,3-cyclohexanedione is carried out in DMF as solvent without catalyst.