63704-55-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 63704-55-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,3,7,0 and 4 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 63704-55:
(7*6)+(6*3)+(5*7)+(4*0)+(3*4)+(2*5)+(1*5)=122
122 % 10 = 2
So 63704-55-2 is a valid CAS Registry Number.
InChI:InChI=1/C8H7ClO3/c9-4-7(11)5-2-1-3-6(10)8(5)12/h1-3,10,12H,4H2
63704-55-2Relevant articles and documents
Synthesis method of noradrenaline impurity
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Paragraph 0013-0016, (2021/07/01)
The invention discloses a synthesis method of a noradrenaline impurity. The impurity is 2-chloro-2', 3'-dihydroxyacetophenone, which belongs to the field of drug synthesis by taking catechol as an initial raw material through two-step reaction. The most e