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1225-05-4

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1225-05-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1225-05-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,2,2 and 5 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1225-05:
(6*1)+(5*2)+(4*2)+(3*5)+(2*0)+(1*5)=44
44 % 10 = 4
So 1225-05-4 is a valid CAS Registry Number.

1225-05-4Downstream Products

1225-05-4Relevant articles and documents

B-ring aromatization of estrogen derivatives

Hylarides,Wilbur,Mettler Jr.

, p. 657 - 662 (2007/10/02)

A noval method of B-ring aromatization of steroid derivatives is reported. Addition of BrCl in methanol to a non-aromatic B-ring double bond results in a rapid double elimination generating the aromatic B-ring. This procedure represents an effective method for conversion of an equilin to an equilenin nucleus.

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