1.0長沙玉登新材料有限公司https://www.csyuteng.com/jpadminhttps://www.csyuteng.com/jp/author/adminrich600338<blockquote class="wp-embedded-content" data-secret="f3FkxrCKr2"><a href="https://www.csyuteng.com/jp/yuteng-7-dehydrocholesterol.html">Plant-Derived 7-Dehydrocholesterol: Ushering in a New Era of Vitamin D3 Synthesis</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.csyuteng.com/jp/yuteng-7-dehydrocholesterol.html/embed#?secret=f3FkxrCKr2" width="600" height="338" title="“Plant-Derived 7-Dehydrocholesterol: Ushering in a New Era of Vitamin D3 Synthesis” — Changsha Yuteng New Materials Co., Ltd." data-secret="f3FkxrCKr2" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script> /*! This file is auto-generated */ !function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document); //# sourceURL=https://www.csyuteng.com/wp-includes/js/wp-embed.min.js </script>https://www.csyuteng.com/wp-content/uploads/2026/10/7-Dehydrocholesterol.jpg600400Vitamin D3 is an essential nutrient involved in calcium and phosphorus metabolism and the maintenance of normal bone health in humans and animals. It is widely used in pharmaceuticals, dietary supplements, food fortification, and animal nutrition. As manufacturers increasingly prioritize raw material origin, consistent product quality, and supply chain traceability, plant-derived starting materials for vitamin D3 synthesis are attracting growing attention. 7-Dehydrocholesterol (7-DHC, CAS No. 434-16-2) is an important sterol compound and a key precursor for vitamin D3 synthesis. Under controlled ultraviolet irradiation, 7-dehydrocholesterol undergoes a photochemical reaction to form previtamin D3, which subsequently converts into vitamin D3 (cholecalciferol) through thermal isomerization. Changsha Yuteng New Materials Co., Ltd., a direct […]