135056-99-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 135056-99-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,5,0,5 and 6 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 135056-99:
(8*1)+(7*3)+(6*5)+(5*0)+(4*5)+(3*6)+(2*9)+(1*9)=124
124 % 10 = 4
So 135056-99-4 is a valid CAS Registry Number.
135056-99-4Relevant articles and documents
Tetrazole Compounds - 5. Synthesis and Transamination of Enamino Ketones of the Tetrazole Series
Fischer, G. W.
, p. 977 - 994 (2007/10/02)
Tetrazole-5-acetaldehyde enamines 5 react with aliphatic and aromatic carboxylic acid chlorides in the presence of an auxiliary base (e.g. pyridine or triethylamine) to give tetrazolyl-substituted enamino ketones 6.The latter can be modified by acid-catal