139884-80-3 Usage
Physical state
Colorless liquid
Odor
Faint, pleasant
Usage
Commonly used as a solvent for various industrial processes
Health hazard
Possible human carcinogen
Environmental impact
Toxic to aquatic life
Organ toxicity
Adverse effects on liver, kidneys, and respiratory system
Exposure risks
Prolonged exposure may cause skin and eye irritation
Safety precautions
Handle and use with caution, following safety guidelines and regulations
Check Digit Verification of cas no
The CAS Registry Mumber 139884-80-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,8,8 and 4 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 139884-80:
(8*1)+(7*3)+(6*9)+(5*8)+(4*8)+(3*4)+(2*8)+(1*0)=183
183 % 10 = 3
So 139884-80-3 is a valid CAS Registry Number.
139884-80-3Relevant articles and documents
A method for preparation of a purine derivative and intermediates
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Paragraph 0116-0118, (2016/12/01)
The invention discloses a preparation method and intermediates of purine derivatives. According to the preparation method, a compound II and a compound III have a coupling reaction in an organic solvent under the actions of alkali and palladium catalysts to prepare the purine derivatives. Compared with the prior art, the raw materials used in the preparation method are cheap and common, and the preparation method is simple and efficient, is suitable for industrial production and provides a new way for the synthesis of entecavir drugs.
